Ok here is my question. I have a 01 xcab I am putting 4.10 gears in it and eventually a cam. What I want to know is would it kill any power or help to go ahead and put a 2600 stall in it after I do the gears or is it ill-advised? All the input would be welcomed. Yes I already have it tuned and runs great just trying to get some stuff ironed out before I make a pass down the strip.