man, I cant see how peeps are hatin' on the 9901ss pipe! I ran mine yesterday with a 41021 on a 6.5mm plus4 C and WOW.......sooooo smooth and gradual, nice linear powerband that had plenty of topend for our backstretch and plenty of low end to clear all the runup jumps.......awesome runtime.......I found my buggy pipeset for the season, no need to look/test any further

Novarossi power baby

I have a 9853ss with a 41005 header coming for my truck!

Odonnell 97T plugs ROCK with 21-4!