Lets say I can get a complete donor truck with no title and a bad motor for under $800.... changing over the parts is easy. My question is the crossmember / frame.... are the 2wd frames the same as the 4x4 with a different crossmember or sub frame? Cutting/welding the 2 together is an option so I really dont want to hear this is stupid or this isnt worth it or it cant be done... Im just looking for this info

thanks