cam in a 5.3

[jarede1972]

I have a 5.3 that i am putting in a 72 chevy 4x4, i have 1 7/8 doug thorley headers and im looking to put a cam in the motor. I am looking at a comp mutha thumpr cam and im wondering if it would be a decent candidate. also do u need to change injectors with this cam? i have a 4l65e with some light mods and also have located a 2600 stall from a buddy. any input would be greatly appriciated. thanks