All, thanks for your thoughts, I really appreciate the encouraging words!
Re the carb angles the goal was to retain exactly what Maserati did since that allowed use of the factory throttle linkeage (modded for carb #2 only) as well as the main air box structure, as Italford recognized (different snorkels only required). I assume the reason Maserati did it was that the RH cylinder bank is slightly forward of the LH bank, so 'opposing' cylinder ports sit at that funky angle. As I recall Aston Martin has the same basic architecture, and fortuitously it's all exactly like FORD architecture...so keeping the angle was definitely the path of least resistance from a fabrication standpoint. It also promoted the straightest shot from the carbs to the intake ports.
George, thanks for the Edelbrock idea, like that approach lot. My tunnel port foundation is a bit short on meat where the tubes would connect but I think adding some weld material there would make this possible. I've definitely learned that compromising on PCV features is bad on a streetcar, one of those things that comes back to haunt you later...
As for the extrusion machining...... I momentarily thought the video link was a preview for some new sci-fi movie. Amazing tool for sure!