I'm looking for a donor car to put a modern running gear under a 1950's Willys wagon. The Liberty has the identical wheelbase. I have been reading about the Liberty's Uniframe as being very strong. Would it be possible to cut the unibody off of the Liberty subframe and weld the subframe to the Willys? How about the front frame extensions? Rear frame extensions? I there anything that makes this a really bad idea?