Dawg -
I've already done the 12 Port billet head for a GMC to the tune of about $5,000. After someone spent that and spent about $50,000 to have a decent set of patterns made plus the cost of casting, shipping, and final machine work, how many heads would you have to sell to recover your investment?

Nick Arias and some others have tried it and have not been very successful at selling enough to cover their costs.

I admire Curt for trying to improve on the production Chevy head as some people have recently been successful running a 261 -i.e. - Mark Miller at Bonneville. Also, Bob Duggan from Denver with a mildly ported aspirated 261 Nova drag car (low 14's at 6,000 feet altitude).

Bob