Just got off the phone with my machinist friend and he got to talking about the heads that he is designing and 'pouring' for the for 2.3 liter (midget racing engines). Well that perked my interest and, long story short, he can design and make cross flow heads for the L-6. Although he hasn't done a L-6 head specifically, he said that he could definitely do it. Obviously the mold making process is the most expensive and time consuming, but, like a fiberglass mold, once you have it, it becomes 'assembly line' to produce the heads.
He can also powdercoat, etc, etc.
What would be the interest? I pushed him for cost, and he reluctantly said in the $2G to $2.2G range per unit, complete. Obviously this depends on many variable, the main one being the size of the initial order. Not sure how this compares to a Sunbelt et. al. prepped head cost, but we're also talking aplles and fillet mignon.
Also, this will obviously be a fairly lengthy process (not off the shelf and in the mail tomorrow), and depending on the start date of work, would be done in 2004. He also has a very good flowbench (made it himself), so flow numbers will be available with delivery.
Let me know.
Tim