Hi, I have a quaife ATB 3.6 in the front with strengthening plate, plus I use the 2 support brackets to help support it on the block....bara said that the weak point is the crown wheel and pinion...if it breaks I will stick a 3.9 R&D in it and add drop gears to the oppliger box.

The rear is the Supra diff mounted directly in to the WRC (improved) lightweight T45 cradle. Supra diff is weir kitted with the MK cover and rebuilt by bara.

Bara checked my box and it was a bent selector fork on 4th making it pop out, he thinks it is the quick shift kit that bends 4th and recommened a different shifter OR trying some rubber bushes on the quick shift.