Is it ok to copy a W5 head and make it better or are we just mad at Speedmaster

A friend of mine reached out to someone about the Poly intakes recently, it looks like there's a pause - or worse - in the Poly intake production.

https://cpwebstore.com/Poly
The other big issue is demand for a lot of this stuff. Every year there's another A body too far rusted to turn into a race car, let alone restore. This hobby isn't getting any younger. It's hard for domestic companies to do a small foundry run and have the product affordable.
Poly cars aren't too popular. I have been looking out for a nice 64 and a Poly would be fine. So many guys are doing the Max Wedge thing or at least a 440. Not needed in my book for the cruising I do.