Guys:
You can go to Ryan Falconer's web site at the following address:
http://www.falconerengines.com/Very nice (and VERY expensive) stuff! The L6 appears to run about $45K. One of his V12 heads (the passenger side?) would be an interesting possibility since the V12 has the same 4.40" bore center as the 230/250/292. Of course the head bolt pattern would be different (5 vs 4) as would the water passages - all the things Leo worked through with his composit head. Then there's the valve train geometry that probably would cause problems with the push rods because I think I remember reading that the valves were canted like the BBC. And then there's the question of a custom cam (CNC-Dude?) because of the different intake/exhaust port sequences. Finally, there's the price (which I'm sure would break the bank for most of us) if the Falconer folks would even part with a single head. I guess it doesn't cost too much to just dream . . .
Russ