I'm thinkin it would be fun, neat and a pain in the ass to narrow a fullsize body for a trail truck. I know an s10 cab would be easier but fullsize cabs are easier to come by and look cooler anyway. By my thinking, the biggest hurdles would be the tranny hump, seat mounting, glass and body mounts. Mounting the seats to tube runners would not be hard since alot of people do that anyway. The tranny hump seems like it would be easy enough to fabricate, you could even make it removeable while you're at it. As far as glass goes, I wouldnt have a clue what to do. Body mounts seem like they wouldnt be hard to fabricate but I've never tried so I'm just spit-ballin here. Any thoughts, suggestions or idears (as Paul Sr. likes to say). P.S. I do recall seeing a skinny cab a member purchased a long time ago, they said it was used in an orchard or something.