Probably a noob question but is the trans cross member for a th350 the same as a th400? If math is correct the piece should sit back 3 and 15/16” for the 400, as that is the length difference between the bell to mount dimension. However, the frame bolts dont completely line up with the holes. Well, the front ones do but not the rear. I am getting ready to box the rails and want to mark out the correct position now. Altereation of the X member is easier now than when body and trans are back on.