I have a buddy that does porting at FastPort in Portland. He's got a lot of experience doing it (7+ 7m's as far as I know). I'm having him do a nasty port on my new head. There isn't a flow bench available that I know of in Portland that will accomadate the 6 cyl head, but we plan on taking it up to Seattle for some specs.
If your truely interested, PM me and I should be able to get you a smokin deal
Kevin