Originally Posted by 1973rx3
... The rx3 71-75 had long third member 24 spline, 76-78 short third member 24 spline. Sa's 79-80 had short third member 24 spline(will fit rx3 housing all years but will need 76-78 drive shaft)...
Hm, so my 74 drive shaft won't bolt up to the 76 3rd member? I had planned to use the 74 drive shaft. Don't know if my 76 came with the right drive shaft. There was a drive shaft in the back seat when I acquired the car, I'll have to figure out what it is. I had been assuming they were all the same 71-78 RX3.
Thanks for such detailed info.