yep, i hear ya, but then then gas has to go through 90deg from valve to exh port before it gets to the exh manifold, so its not like a less than perfect theory manifold is the only design issue.
anyway, perfect world tubulars the way to go imho, but its a lot of work as i found out and has a lot of potential for the F*ck Up Fairy to visit, whereas the K.I.S.S. approach of using a stock manifold or fabricating a log manifold is simpler and does work albeit potentially not as well as the tubular if done correctly
http://www.boostedk20.com/forums/sho...bular-Manifold
hopefully the pics are of use to the OP, even if theyve given you a chuckle nedge...