[69Cobra]

What motor are you building and where are you located?
Is this a class motor, bracket motor or street motor?

Depending on what you are looking to do with it and where you are located my recommendations would go like this.

If your are east of the Mississippi I would go with either Blair Patrick in Tennessee or Tony Bischoff in Indiana. If you are west of the Mississippi I would contact Jeff Colvert here on the forum. He is in Arkansas. Either one of these guys can deliver beyond your expectations and help you out with the engine as a whole to make sure everything works together and not just sell you flow numbers.