The BGE cam is a slight upgrade, the SRT cam is even bigger upgrade, if he just drives the truck get the SRT cam, if he tows with it get the BGE cam. They both just bolt right in. If I use the SRT cam I recomend the SRT springs but the 5.7 springs will work and they are a lot cheaper. The SRT cam is the cheapest. I have heard the hell cat lifters are better, maybe check into a set of those. The MDS is not an issue, just keep it, but if you positively hate technology it is easy to ditch, just get the non MDS lifters and or a tune. The tune can eliminate it all by it self even with the MDS lifters in it, the non mds lifters will prevent it from engaging but will give you a check engine light, you could also use a 3/4 or 1 ton confuser but you will need to have the VIN programmed into it.