Hey guys it looks like i have an 84 700r4, 27 spline, and i want to put it into an 85 iroc z "supposedely 30 spline," what needs to be changed in order to do it, from what i know just the torque converter, is this right, oh and on the 84 it has an electric speedo that must have been changed from the previous owner, so i think that has to be changed also in this case. Any help would be GREAT! thankx