Originally Posted by
YBSLOW
and OS sells mr02, 03, 04 and 05 manifolds now
Yep, but I have not seen any list of the length or what kind of performance is linked to those manifolds. Also the topicstart talks about a combo package, you can buy a 50 dollar manifold not knowing what to get or you can get a few dollar shims with which you know you get some better low rpm performance.