Part number 4492440. 3.9 V6. A friend has one, but his is not only NOS, the carburetor flange is also undrilled. This is the only picture I can find on the internet. He's looking for any information about it. Thanks.
That's what I was thinkin. It's also for Magnum heads as the bolt holes are near vertical. As narrow as the market would be, I think it's at best a conversation piece. lolMaybe they sold some unfinished so racers could modify them the way they want?