Has anyone seen any of these out in the wild yet or is the supply chain issues making them unavailable? I was thinking about buying a set from summit, but not a single one in stock.

funny you bring em up, I just saw a mention of them in a SEMA video from last year but couldn't find any mention anywhere else so I came in here to ask about them... it just seems that with factory castings that can be pushed near 400 CFM there is not much need for more flow (very tall order I know)from heads that cost twice as much. Thitek covers pretty much anything bigger, edelbrock answered a question that didn't need asked, they came out just after the BGE Apache and flow about the same for double the money.

I had some porting option open for the stock heads, but apparently the stock of apache heads is non existent as well. I haven't been able to locate the stroker kit with the piston I wanted either, seems everything is out of stock.

I still have 3 or 4 sets of BGE heads plus a busted one to experiment on so I'm not too worried yet.

I keep an eye on fleabay and usually buy em when they come up cheap, I figure the supply will dry up in a few years like good magnum heads did and SB and BB head before them.