I agree Justin, I've been thinking about a retrofit Diesel into the Scorpion. Gosh, I happen to have a low mile 5.9 sitting above the garage. A high rpm kit and it would be wonderful upgrade. The 4.2 works a bit too hard. Don't get me wrong they haul ass, but Diesels are designed to run near max power and rpm more reliably than gassers.
I had an M42 Duster, and althought I miss it dearly and want it back, moving is a total PIA! It was only mid size at 50,000 lbs and 10.5' wide. I'd HATE to think about the cost and hassles moving anything even bigger.