I know this question has been asked (I spent a few hours using the search button), but I still don't know where to find a good deal on a 700R4. Needless to say, my 89 k5 tranny needs to be replaced. After 160k, 3rd and 4th are gone. From what I learned from searching, I would like to get a GM rebuilt. But where is a good place to get one of those? I also saw mention of using a GM high performance version of this tranny, and I think I found the one that was mentioned, only it's a 4L60E (police package 350 Vortec powered Chevrolet Tahoe). Would that work or am I looking at the wrong one? Heck, I'd love to swap in a SM465, but I don't know which doner trucks to look for, or what I would need to do to keep the TBI chip and speedo happy. Where would be a good place to find that info? I'm running 33's with 3.42's right now, would that work with a 465?