This could be a long one so you might get a cold one before reading on . . . So basic rig rundown is a 88k5 with 350/700r4/208 and CUCV running gear. I am aiming toward and doubler and as to this point I have been gathering parts for an SM465 tranny swap also. I even have a SM465/203 setup complete. But in the last couple of days I have been thinking about staying with my 700R4. The big reason is of course compromise. I would love to keep the sm465, but in truth my and I will be driving this vehicle on the trail. I am afraid the SM465 might scare her on the trail. Also the overdrive on the 700R4 makes it much more practical. Also the pedal swap is concerning me, however that is easily fixed. So here are my questions 1. Have very many people ran a 700R4 with a doubler with much success? I Stephen did in his TTC, but has anyone else? 2. Besides cooling and fresh fluids what are some good upgrades to a 700R4 for this application 3. I prefer to do all my own mechanical work and I don't think I am too bad at it, don't let me near anything cosmetic, but can the 700R4 be built be an enthusiast, read as having never rebuilt an automatic tranny, or does it have to built be a specialist? To go with this question is their a good shop manual that has the necessary steps and specs? Any information would be much appreciated. I would love to rebuild my own transmission just because A it is cheaper B if it breaks I know whose a$$ to kick.