A Friend Of mine Suggested That I should go out and buy a 6.0L Truck Intake manifold, My pal Sez it is Bigger Than a 5.3L Intake,(hes Runnin the 6.L Truck Intake on a Camaro) Cheap performance boost, He says I can expect up to 8 hp With 6.0L Intake. So I go to buy one, and the Guy @ Junk Yard Says His Book Says they are Interchangeable, Meaning to him they are the Same, and he tries to sell me My same Intake off of another 5.3 from a yukon! Whos Right, The junk yard Or My Freind? He Swears up and down that They are diffrent...!