Prototype tooling and facility price are the cost and availability drivers.

Only a couple manifolds can come from each mold...then the mold has to be thrown away, and Mopar has to pay for a new mold. It gets expensive.

Personally...in my humble opinion?

I would like to see the manifold cast in the same place, using similar tools to the LA and RB M1 manifolds, the price brought down and the availability brought in line with the rest of the MP manifolds. Though it means there is a higher upfront cost...it's a one time cost...and sure there might be a little more casting flash to clean up here and there, but I wouldn't care and I doubt 99% of racers would complain.

I will keep bringing that up to those who are empowered to change it every chance I get.

The manifold is a killer piece, there's nothing better in that configuration out there. The price and availability concerns are well understood and thanks for the comments.

I stand corrected on the Apache head. It has basically
6.1-sized port openings just like the eagle, but the bowls are enlarged quite a bit. So they would work just fine also.