It's obvious you don't know anything about F20/22C. They flow air very well. For about 5k you get a nice Full Race or Peak Boost GT30R turbo kit. Even on low boost you will be seeing 400hp at the wheels if it's tuned properly. The kits are rated for well over 600 horsepower at the wheels if you want to run more boost and some internal strengthening. The weak point on the car is the rear end, which can be swapped out for a Nissan differential. I guarantee you will be much more satisfied with a S2000 than an SRT4.