The tool for the manifold was replaced, hence the bump in part number. I can not say why the price is the way it is, but it is not due to any extra extrude hone. Again, when the tooling changes, so does part cost.
ALL svt manifolds were flowed to the exact same spec - 170 cfm. This never changed. The only way one would have gotten more EH is if it did not meet the spec during the process. Regardless, no stock SVT UIM ever flowed 180 cfm from the factory. Just did not happen.
I can provide the specs, to all the nay sayers, just to prove my point. Furthermore, I am continually surprised to see how many gurus there are on this board.
