The 200R 4 in my 1987 442 was slipping before I put it up for the winter. I was wondering if I should just rebuild the 200R 4 or swap to a different trans. Looking for some options on what to do. I may do a mild rebuilt/upgrade on the 350 Olds that's in the car. I want a transmission that can hold up to a little more street performance than the stock trans. Should I build up what I got or switch to a 700R4 or a turbo 400? Any help would be great.