[carltalon]

Cummins are probly the best for reliablity and power. Plus they've been around in the dodge trucks forever so you could probly find one pretty cheap. Fords Powerstroke is a damn good motor but will proby cost you a little more. 7.3 Strokers are pretty easy to come buy and are starting to get pretty cheap the 6.0 is still up there in price and IMO isnt the motor the 7.3 was I'd stay away from Chevys older diesels. There just not on the same level with the newer motors. The duramax is prety good but you will pay for it.

Diesels are alot like DSM's. They can make alot of power just by putting on Exhaust systems Intake pipes etc. Reprograming bigger turbos and injectors will have you buying driveline parts in no time.