Dave----How long did your header turn out to be? Mine is pretty long, about 16", I get tons at the low end but my power band ends before I reach wide open. I was thining it could be a bit shorter but figuring out how to change the mounting of it doesn't seem worth it to bother, besides, I'm perfectly happy maxing out at 34mph, I can go from 0 to 25 in about a second.