I had figured to buy a parts truck for the 700r4 NP208. Is this the best setup to use? I don't think I will be doing any heavy wheeling. I want to be able to drive it on the highway but still go play in the dirt. I have been looking for a 83 - 91 Blazer/Burb/Jimmy as a drive train doner. When did these change so that you need a computer for the lock up? Can this be bypassed if I find a newer truck. I want the simplest and best automatic setup that will give me an overdrive. Any information or suggestions would be greatly appreciated.