The cam is Project X diesel is a very good drop-in cam for CR trucks, with bigger chargers. It spools quicker then the standard drop-in CR grind when combined with a larger turbo. I would put it in with a 64 or 66 on a towing truck. I would defiantly put it in with a Industrial injection Silver bullet. Both of these cams are drop in and mild enough in any CR truck, one is just a little better tailored to that particular application ,