Frame swap questions come up frequently. On a older vehicle or street rod / hot rod it is almost always better, more cost effective and less work to use the original frame. There is a lot of work to modifying a frame to fit a another type of vehicle and get it to fit right and work correctly. Most turn into hack jobs that don't look right or function correctly. There are a lot of issues, steering placement, engine placement, correct wheelbase, body mounting, etc. In most cases it is way more work to swap frames than to use the original and just update to modern suspension and axles.