I have rebuild a few Turbo 350 automatic trannys in the past. I now have a 700R4 auto in a 4X4 built 87 Blazer (Built 350 and 38 in BFGS. I believe the sun gear has cracked or broken. My question is: Is rebuilding a 700R4 similar to a turbo 350 or will i be in over my head with the complexity? i have noticed i can get a DVD for this rebuild which may help too..Not having much luck finding a used 700R4 with decent miles for under $500 when i can be a stout rebuild kit for $300..any insight appreciated.