68 valiant signet

interesting, any idea how much torque that 5 speed can handle?
i spoke to a buddy today who builds jap drift cars and he says the r154 trans from the turbo supra is a lot stronger than the non turbo w58 trans i've bought. they are more than twice what i just paid tough for mine. he says the weak link in the w58 is the input shaft but uprated ones are readily available so i'll cross that bridge if/when i get to it.
neil.