Your fist problem is finding a place that sell E85 in the Tampa area. The only place that I know of that has a stock pile of it is Macdill Air Force base which obvisouly is not available to the public. But on the other note if your goal is only 15 psi you wasting your time. You dont need to mess with this E85 stuff. There are turbo Mustangs in this area running that and then some on regular pump gas!

In my opinion here is what you do. Build the motor to work with a turbo like a lower compression piston. Install a boost controller. Set it up for whatever you want to drive it on pump gas. Then put race gas in it when you wanna really pump up the boost like on the weekends and when going to the track. That honestly is going to be the best way to go. You can also look into methonal injection to keep detonation within limits with high boost turbo applications.

Now I am not sayin the e85 approach is not the way to go. Its just they dont sell it anywhere in this area. So basically you would have a car that you would have to have fuel shipped to you just to drive it.

We actually looked into running one of are drag cars off the stuff because NMRA has made it a legal fuel to use in some of thier class's. But after doing some research tryin to find where to buy the shit the only option was to have it shipped to us in 55 gallon drums. Which isnt all that bad but the fire marshel had a field day with us when we contact him about storing it in our shop. Told us we you have to build a seperate building so many feet away from the shop to store it. By then we said screw that crap.