this is a must for t2r drift car! though i had 2 issues... 1st 1 is that it comes with a 38t pulley, t2r is equipped with the set-up of 34t - 20t - 34t... i had to FIT (drill 3 holes for screws and enlarge the centre hole) to fix the old 34t pulley. 2nd issue was that i had to turn the multi diff & the rear locked diff the other way around, i bet it was a factory mistake to insert the one-way bearing the other way around.

but my drifts are massive now (hand-brake effect)
thank you rc mart :D