I have a chance to buy a running hercules 3.7 DT for 300 bucks, and it includes everything-ford adapter, flywheel, clutch, starter, alternator, vacuum pump. turbo, injector pump. First off, are these engines known for any major problems? I've searched up and down but can't seem to find much info on them. The engine is out of a 1983 bread van and is rated for around 100 hp. How come you never hear anything about them? Any info is appreciated!