I had a 15 row and gave it to my dad and put the stocker with a big neck back on. It sat too low, didn't seem to help, and gets very little additional air without some kind of a custome scoop. I almost sucked a skunk into mine, that was the end of it for me and my car is stock ride height. BTW, if you use alky injection, the stretch ins't worth the extra hassles IMO. My car just dynoed almost the same HP with the stocker.