1st Gen Crew Cab Engine

^-- This might be even more viable if you hook it up to a OD trans, maybe do a OD A833 or 518 with a JW ultra bell big block bellhousing. Might be knocking on high teens early 20's MPG on the road with 4.10's.

http://board.moparts.org/ubbthreads/showflat.php?Number=6163622

http://www.forabodiesonly.com/mopar/vbpicgallery.php?do=view&g=6738