You sure ain't kiddin' about the amount of research and planning. I think it's 80% of my time. I've been debating which transmission to put in the funnycar lately. The torqueflite adapters are cheaper but it might be less expensive in the long run to drop in a powerglide. Total cost will probably be the deciding factor. I've been adding up the costs of adapters, converters, and transmissions and comparing them.