do some weight reduction on a dc5r then think about the following:
RBC IM, exhaust upgrade, kpro and tuning, suspension and brake upgrade and some good track rubber = fast NA car, drag or circut. your choice. not to mention type R has LSD already plus recaros and is approx 70kg lighter to begin with.

i still cant see the point in doing this on a type s when u could sell it, buy a dc5r and put the change towards this hence why i said earlier 'you bought the wrong car'. perhaps when u bought the type s you werent thinking along these lines but if you are now then id sell, get type r, weight reduct it and begin modifying for circut or drag as u see fit