Ok...here's the deal. I am going to buy headers in the next week. Only thing is I have one small problem left to determine what ones to get. What the heck is A.I.R.? I have gotten so many different people saying what it is I am confused. Do I even need headers with the A.I.R. feature? To save you from clicking on my profile to see what I drive...it's an 86, K-5 Blazer Silverado, 350 small block, 5.7L, V8, 4x4, auto tranny steering wheel shift, factory a/c, Vin # L (some brands ask for that?)...think that covers the info that is needed? If not then um..ask me and I will tell you, that is if I know. I am attempting to put them on myself. So if I disappear from the site you'll know why...I was killed in a freak accident...death by exhaust....ha ha. But seriously this is my attempt to learn how to actually work on it. Any advice you all have is welcome! Oh yeah Happy Valentine's Day.....! And guys if you have a significant other, go for the flowers today...a free oil change is not the romance most of us are looking for! :-) "I love the sound rice burners make when ya run over them"