Ditto what Barrman said. The OEM pumps on the CUCV engines were DB2829-4521. There are no magic bullets to improve significant power in the 6.2. One of the main Laws of Nature is - to produce power, fuel must be expended. There is no problem in increasing fuel to the 6.2. The problem is, the 6.2 was not designed to burn much fuel. Adding a turbo will help, however think about it - all a turbo does is increase the amount of air delivered to the combustion chambers through higher pressure. This higher pressure also increases the compression ratio inside the cylinders during ignition. Unfortunately, the designers of the 6.2 did not take into consideration the possibility of these higher compression ratios when they designed the bottom end of the engine. Subsequently, the higher stresses on the main bearing assembly cause additional wear and ultimately failure.
As humans, we pursue possessions that we need, and we pursue possessions that we want. If you actually need more power, such as to pull a trailer or to operate in higher elevations, I suggest you consider a stronger engine such as a new GEP 6.5.
Just my 2 cents. Hope this helps.
