I have a 1985 PA with a bad motor. What parts would I have to use from the 1985 3.8 to put on the 1987 le sabre 3.8 t0 put it in the PA.? Also does the trans from a 1987 fit a 1985,Thanks.

Biggest differnce is going to be the ignition systems, the 85 being a distributer and the 87 being solid state, DIS system. Don't quote me on this, but I do believe the transaxle is the same.