Question= I have 2 automatic transmission. 1-88 and 1-87 are the parts like the valve body's interchangeable?

This is used but works great.   Asking 35.00 obo shipped plus PayPal fees.   http://i283.photobucket.com/albums/kk299/rosengrant826/b20b5bb3.jpg

turbo heat shield, top and side shield   stock turbo or bigger in good condition   top a/c hose, and a/c pully on top of the engine   3 inch down pipe   injectors   working factory antenna         thanks, Lee

I have been searching the posts to find a quick fix. I just got another quest running. it runs great except no overdrive. My other auto quest has NEVER had an OD problem so this issue is new to me. I installed an engine and tranny in this car recently and dont know if I may have missed something. what should be the first thing I check? all other gears work great. thanks, Lee