Cummins QSC 8.3 flash?

[Stephen4785]

Little background on this engine. It's an 8.3 that's in a mulching machine. No egr/dpf/ or any emissions controls other than a muffler. The engine drives 3 hydraulic pumps at a constant rpm. The manufacture has 2 different options for this engine. 300hp and 500hp. I'm currently rebuilding it and replacing all injectors and the cam due to wear. Since I'm replacing everything I want to figure out way differences are in the 2 as far as programming and hardware. According to the manufacture the engines have the same hardware but who knows how in depth the knowledge of the salesman are at this company. I'm trying to find a serial number off of a 500hp model and compare the part numbers to see if there's different hardware.