I have 3 questions. Just bought a2002 H. O. 6spd 3/4 ton. Love it! New to the diesel thing tho. Can any one tell me anything about the scotty air system? It's recommended by Jannety Racing Ent. Also can any one tell me if stantadyne fuel conditioner is a good thing, should be used or not, etc. Found that recommended on another site. Say's it adds lubricity back to the fuel. And lastly, who makes the 6 spd trans? I live in colo so I am wanting to help the truck breath as much as possible, or do I really need to? It sure doesn't want for power. But like I said I'm new to this so I have lot's to learn. Sorry if I'm in the wrong area. New to this also. Thanks