You can do almost anything with 5K...I'll give you the URFUCT budget race plan. I would try to get an 01 and up(better intakes, clutches, injectors), throw some Nitto's on it and control arms with relocation brackets, panhard rod, and strut tower and you should hook fine, at least I did with 500lbs of torque at the wheels. BMR fabrication is local and they hook you up when its cash. I paid less than $300 for all of the suspension, I don't have subframes although I should cause it's a great investment like previously said. I would also get some springs to lower it, then add a lid, mass air sensor, ported throttle body, cut-out on stock exhaust, and all the free (cheap mods) like tb coolant bypass, air temp sensor, clutch drill out mod. With that you car will run, look, handle and sound better and you have'nt even spent $1500. You can do a mild heads/cam and spray and run close to 10's with the money left over. I would'nt worry to much about the rear end until it breaks, I have a complete used one here with 3.73's already in it for when mine breaks and I picked it up for $250, which is almost 1/10 what a 12 bolt would cost.