i found a 1990 4.3 v-6 to use, but what cam to use, my plans is to use vortec heads with edelbrock performer intake for vortec, throttle body injection, will be in 3500pd car with 2.73 gears and t-45rs 5 speed with 3.37 first gear and .67 over drive, been looking at comp cams but dont which one i should use