Vee_Que;29627 wroteiceton1975;29585 wrote350 plus, depending which box you use, the cast iron boxes not as strong as the larger alloy boxes
W58 can handle good power but not much torque. But the good supra box is the r154 which does handle a lot of torque. The 6 cylinder 2.5 is good for boost too.
r154 is quite a bit heavier though i think, and from memory the shifter doesn't line up as nicely as it does with the w58
the dogleg getrag would be cool to have, supports similar power as the supra boxes but dogleg first is always cool, shame they're so rare