What are your honest intentions for the truck? Street/strip, all out drag, daily driver, tow/haul? This, your tire size, gears, transmission type, weight, compression, exhaust type, etc etc make a huge difference in your cam selection. Most manufacturers have websites that let you spec out what you're doing and let them choose a cam that fits. That's the route I'd go. Just remember, be honest with yourself about what you want.