If only 23* Chevy stuff is legal, I wouldn’t spend a penny of W or P stuff until I had it it writing from the rules committee it would be legal, without penalties, for at least 3 years.
Those heads are clearly outside the “intent” of the class.
I wouldn’t build anything where the big stuff(blocks, rotating assy’s, head castings, etc) wasn’t readily available.
Thinking about it a little more and you are very right. Wouldn't take long for someone to outlaw it.
