Hey, so the gt4 stub axle will fit a g series lsd, i brought a g from spartan road wreckers , it said gx71 on it, but had 4 stud half shaft, which a few people couldnt understand. any way id been doing the torsen swap in my ta63 and had spare half shafts and compared the two, the same. so the good thing is the 6.7'' t series torsen has a strong axle, and behind a low torque power train would perform , but in the case where i had it behind the 1uz, i split the case in half at meremere.