I may stop u to take risk...
even gsr isn't statisfy the 70% after locked 4wd gb...
U may cheating urself with higher final drive...
& i do admit that...Mit's 4G9X Gb always did that...
Even GSR06 just change it on 5th gear!!!(Sorry...play tek bao)
U see...this isn't that easy that part can be fit with >8k rpm...
even Evo gb doesn't!!!max 7600rpm...
Driver dependant!!!
The application is for turbo but not NA...
The main contributor is the air-fuel ratio & boost so that make u feel ligther rev...
In fact, NA lesser torque & hp...
I can bet...more or less not mch diff.!!!
U know, mi LSD are even heavier than urs!!!