I wasn’t referring to Wilson reworking the heads.
I was referring to the $1675+ shipping to have the manifold done....... plus whatever you spend with someone like Total Flow going through your heads.

It’s probably going to be around $250 to ship the heads and manifold from Mi to Fl and back...... so that puts the cost for that operation at $1925. Add $500-600 to have the heads gone through plus a bunch of milling....... you’re at $2500.......or more.

Regardless of the fact that the heads have already gone 9’s, you don’t have any confidence in them.
You’ll never be happy with them.

Flip the top end now before you spend a bunch more money on it, that you’ll wish you’d spent on different heads.

It sure seems that me what you really want is different heads and a 470.
You should just work towards that goal.