skits r31 is atm being redone to run around 12:1 compression and that will have to be solely on methanol/pump combo (even at present thats running on a touch of methanol)
thats wihout ITB - so if you were to fabricate a custom set of boxed ITB's, run 12:1 compression and run on methanol/98ron mix, and have a 8500 rpm redline to make any power at all, then to be beaten by a turbo making the same power cause your power doesnt start till 5500rpm then fine, be my guest
it would sound like a f**king screamin jet when it revs high, but imho that amount of work is not worth it for a street car
maybe a dedicated track car, but it would be a pig on the street