I have hooker competition headers, 3" collectors. I have a custom bent exhaust, over the axle, H pipe, 2.5" with "race" mufflers, welded seams. Mild cam. Stock compression. Idle sound great. A louder than stock, but not enough to piss off the neighbors. When i "light em up", the car guy neighbors wonder if i have exhaust dumps. Loud as hell. There is a bend in the one pipe over the axle im not impressed with but flow seems equal on cold days. with the H pipe im not worried. Im happy with the exhaust. Seems better than the 3" straight pipes with a turn down and mufflers i had on there.