So i just picked my self up a 2005 sierra 2500hd about a week ago and i want to build a 3/4 ton pre-runner. I want to go ahead and start with the engine work first then start on the suspension set up i want to end up having the truck supercharged but for know i want to run a programmer and some intake stuff can anybody give me some advice for companies to go with or to steer clear from?