you can always get a marine control box for just about every diesel engine thats placed in a class 8 truck. dont get caught with it in it. and it will surely void any warranty. i guy i used to work for had cat do some tweaking to his c-16 which stock was 600. after some work to timing and drilling out the injectors they got it to 829. then some more programing and last i heard it was 930. with a marine box for it the cat guys were projecting it over 1300. i dont know if the drive line can handle that much.