I think an organization like Inliners International could ask enthusiasts how many of you would buy an new head for your 194-230-250-292, if one were available? I'm sure if the numbers were high enough, Brodix, Dart, Edelbrock etc. might consider manufacturing a replacement head.
I personally would like to see an affordable cast iron 12-port head for everyday driving that uses stock chevy components, rocker arms, valves etc. (exc. intake/exhuast manifolds). If you use components that are already being produced that should keep down costs.I'm not sure whether or not aluminum heads would cost more to produce than cast iron heads.
I'm sure someone out there has the resources to get some engineers and start the design work and then the casting, machining, and assembly can be farmed out.
Just my 2 cents.
Dano

If I had the resources or at least knew where to start I'd do it! Actually, I would design a whole new 300 ci inline six that uses stock chevy v-8 engine parts to keep the price reasonable, but there might be a licensing problem there. One day soon big I-6 blocks, heads, and components are going to be extinct. Time to start planning.

69 C-10, L-6, 3 on the tree!
No p/s, no p/b, no airbags, no a/c, no tilt, just a truck.

"Takes more than a coat of paint to make it at Thunder Road."