If someone could make a cast manifold that was nice and cost efficient and showed decent gains I think it would sell like hotcakes... Damn Honda boys have so many diff manifolds to choose from.. From cheap to skys the limit.
We need something like the Greddy Manifold the RWD guys get setup for FWD When I was in the Honda game for a brief few years I had a Skunk 2 copy of the OEM Type R manifold setup for a GSR which nice..
Maybe something like this for us would sell alot I dunno.. Like OEM N1 replica that has the highport DE head flange, Id think that would sell and priced at like $300.