I have a 6.2L in a 1983 GMC. Very rusty and in need of a 700R4 auto transmission. Not really worth fixing. Other than a leaking injection pump, I never had any trouble with the Detroit 6.2L. Still has great compression. Not much power, but doesn't burn much fuel considering its displacement. I'm actually looking for another GM truck to drop the 6.2 in. Any decent Cummins is out of my price range. I'd love to drop a Cummins 4BT in something, maybe when the 6.2 finally blows up.
I want:
4WD
Manual trans with "creeper" 1st and reverse. I'm not a horse!
Diesel (with mechanical injection)
Solid front axle
Not a dually
Not really rusty
I believe this leaves me with a Ford F350, Dodge Ram 2500, or older GM. A long wheelbase makes plowing very difficult in tight driveways. The old GMC (regular cab, long bed) has a 131" wheelbase, which is longer than ideal. I'm starting to think I want a short bed Chevy/GMC, but I know I'll miss the longer bed when hauling stuff. Yes, I'm very picky. And I'll probably be shoveling my driveway this winter.