My first magnum build, advice appreciated

Thanks. I was just now looking at a Hughes cam and springs.. Do the simple add ones help much on the magnum engines or is it inevitable to tear into the motor to make them run decent in a truck. Just looking for a reliable truck with enough power to turn my 35" tires in the the snow and mud, and put a smile on my face when I open it up on the highway. This is my first magnum