At this level a good 18º isn't going to be much short of
take off sb.2's if you use a well built 18º
http://raceflowdevelopment.com/18monster.html
SB2 or 18º , .. it ain't gonna be cheap, .. ..
but I can cut you some deals on hand finishing work on my 18º stuff
and I'll custom tune the CnC program to your application,
free basic manifold port if you buy a head & manifold package, etc.
Curtis