Does anyone know anything about cams? I'm new to internal motor work. I really wanna put this cam in my truck and get the 4:56 gears. My 4.7 with these 35 inch tires are not cuttin it anymore in the speed department. What will I need besides a tune to run this cam? Would I need to do anything to the heads? Will I need new rockers and lifters? Anything would help me on this. My truck is bone stock except for a muffler. I plan to have Gibson shortys and a Volant CAI before the cam and gear install. Here's the link...