Time for 727 rebuild.

I rebuilt my 904 and it was the first time I had ever rebuilt a trans. Like everyone says its pretty easy. The hardest part for me was pulling the pump. I didn't have a pump "puller". I used some threaded rod about 2' long and put a 5lb bench press wt on there along with some washers and nuts so it wouldn't come off, and used that as a slide puller and the pump came right out.
Good luck!