I took apart an old transmission out of my old car to get to know the inside (just the stuff under the pan - mostly j-mod stuff) and notices it looked like it had the redesigned parts but the 2-3 piston was PN F7A9-75292-AB and the reverse servo was PN E0AP-7D189-AA. Also, the OD servo didn't have a PN just Unipiston TM, the letter A, and ABCD4 on the top of it. The tranny also had a shift kit in it, Transtec I think. There was extra springs, on solid in the 1-2 and and one very stiff inside the 2-3 - both was inside the stock springs as blocks to add more tension. I didn't do any of this work to the car (94 Tbird 4.6 LX) the previous owner had it rebuilt. My current car is a 95 Mark VIII and the previous owner owned the car from 30K till 87K and only changed fluid/fliter. Every now and then it shifts sloppy or hard to I think it's time to update the parts/Mercon V and I already ordered a cooler and guage but I don't want to drill the plate or put in a shift kit, I want to retain the stock smooth shifting. What should I bother using out the old transmission and what should I definetly buy new and not use off the old transmission. Thanks for your advice guys.