I just finished a four month job to the 4Rocker, thought I would share. Went through the suspension, rebuilt the supercharger, and completed a tranny valve body upgrade.

-The Sonoran Steel suspension system is upgraded so that it performs better in the dirt, so don't think this is a lift kit. Many components were hand built due to no suspension kit readily available.
-Rear coils from a FJZ80 Landcruiser, front coils from a 2000 V8 tundra. Both of these vehicles are heavier than the 4Runner, but still incorporate different left/right spring lengths like the 4Runner (heavier drivers side on both front and rear).
-The paint used is Dupont Enron polyurathane fire engine red over zinc chromate primer. These are the same materials used for aircraft due to high chemical resistance.
-The Bilstein shocks were custom built to specs according to Sonoran Steel specs. How did Sonoran Steel get Bilstein to make custom shocks just for the 3rd generation 4runner running the 1.2 suspension system? According to Steve, the owner, "Easy, just give them $20,000". At first I was skeptical, but the 4Rocker drives so easily over bumps like curbs that you don't even know what you just drove over. It's really amazing. I guess that is what 10 years of R+D in Arizona and Utah gets you.
-Brakes were swapped. Brembro slotted rotors, 2000 Tundra Calipers.
-Skidplate/bellypan is 3/16" thick, extends to the fuel tank. Each section weighs 60 lbs and can be used as a jacking point in a pinch.
-The rear axle lower links are built from 1/4" DOM tubing (common weak/damage point of stock suspension, even on newer model 4Runners and the FJ Cruiser) and have spherical bearings at the ends to allow the rear suspension to flex like mad.
-Yes, that is a locker on the rear axle.
-4.56 Yukon gears were installed because of tire size swap. 4.88 is the more popular choice with the Toyota crowd, but so are a minimum of 33" tires.
-Panhard bar was lengthened to center rear axle from new suspension, rear bumpstops were lowered and swaybar raised for the suspension
-TrailReady beadlocks are custom made, one-off set. Tires are GoodYear MTR, similar to those on military HUMMERS.

Enjoy:

 

 

The lower links before I painted them:

Beadlock wheels, this set was custom made, I do not think there is another set powder coated gray like them:

 

I might as well show what I did previous to this as well, wanted to do a build up thread for a while now. Continuing on, gear swap pictures:
Front differential removed (with old suspension system):


Rear axle carrier:


Rear differential:


Front differential w/ new yukon gears ready for install:

 

Here is part of the fuel system. The supplemental fuel system for the supercharger has three parts: the 7th fuel injector including boss and lines under the hood, the computer to control it, and the fuel pump. Here is the pump install:

First, the tank needed to be removed, and the pump/sender/level switch required removal:



The 255lph next to the stock pump. It required a little modification of the bracket and harness, but wasn't too bad. I originally upgraded to a 190lph pump, but I was leaning out when I had it dyno'ed. I couldn't get a AFR less than 13:1. The 255lph fixed the problem. So I had to drop the tank TWICE. You think I was working for the government:


Installed pump:

 

Must be nice to have money.

 

Automatic transmission upgrades:

Limited model 4Runners only came with an automatic. The A340F transmission is also used in other vehicles like the Jeep Cherokee and Toyota Supra. What many do no realize is that the valve body, the mechanical computer of the tranny, is set up different for the vehicle it is going into. The 4Runner comes stock with 'luxury shifting' and made for the power of the motor. What happens is that the tranny shifts too slowly, burning up clutch packs between shifts, similar to burning up the clutch on a manual. This type of modification is best left to a transmission race shop that specializes in the transmission model you have, which are only two in the U.S. for my A340F: Level10 and IPT (I went with latter). There is a ton of R+D of removing, adjusting, installing, test driving, and repeating as needed to get it perfect before they offering this service to the public, which is what you pay for. For the stock power the motor was making, the tranny was fine. When I almost doubled the power, the shifts were extremely long with a noticeable decrease of vehicle speed during shifts, (OVER 1 SECOND between 1st and 2nd for example)! I sent the valve body to IPT (import performance transmission) up in Maryland where it was disassembled, orifices were enlarged, new solenoids installed, new springs for the accumulators, and it was adjusted to add twice the line pressure at max boost. I don't have pictures with it out due to the mess and how I had springs rolling everywhere on the garage floor, only installed:



All done, new filter, pan painted, flushed, and serviced with Amsoil synthetic. I used about 20 quarts of Amsoil ATF, go to their site and price the fluid. But it is the best stuff out there!

Transmission oil cooler installed. This is a quality stacked plate design, what should be looked for when buying any type of oil to air oil cooler. A note on attention to detail: Those clamps securing the oil cooler lines are aircraft adel clamps. Far superior to the wire-tie method. All in the details:

 

Beefy ifs system!!!

Pics of the whole rig?

 

Actually with the suspension pictures, it was $300 for paint, $30 for the paint gun, $30 for sandpaper, $20 for a few wheel studs, and $50 for oil seals. I don't charge myself labor. Of course a pro could have done it in 2 weeks instead of 4 months. Most people spend that in a weekend of going to the bar and taking the honey out to a movie and dinner.

What I am saying the biggest hurdle was 'get off your ass'.

 

Here are some exterior pictures. The roof rack is made by Gobi and is unique in that it spans the entire length of the vehicle, is one solid piece, and can be walked on. As flimsy as the roof of the 4Rocker is, I got my fat ass up there and there was no flexing on the rack or rear ladder. It took months to get it as once again it was custom made because I wanted a few different things done to it. I mounted a HighLift jack on it (I painted it to match the vehicle) and some old school lights (Ironic: lights are solid aluminum, DOT/ASE approved, with glass lenses. Yet they were only $20/set because the store had them in inventory for 15 years! Case of 'pay less to get more'):



One of the rear ladder. Would you believe no holes had to be drilled?:


4Rocker just happens to be 7 characters and was actually available: