This is another of my J-20's. It's an 85 with a 360. I keep it in Upstate New York to plow my driveway with. It has 5 inch lift w/ 37's on H2 wheels, lockers, rear winch. Soon to get the 401 I have been building.
Also not a J truck but sharing a lot of J-20 parts is my 85 CJ-7, also with a 401, Dana 60's, Clark 285 SV 5 speed