I am torn between the 350 route and the stock drive train, the truck, should I sell it, would be worth more all original than rodded but I am not adverse to hopping it up. If I went the 350 route, I have a free donour vehicle, a 74 3/4 ton van with fronts discs etc and I would probably try to locate a donor 49 frame to install the 350/350/rearend onto and then just keep the old drive train incase....????