Well, I do. If you want a cnc job, TEA is the only place I would go. If you want hand porting, that's what I do. I have a superflow 600 bench, and 17 years experience porting and engine building. We have a DTS dyno coming in Jan, and full machine shop here in SoCal. Check out my website:www.immengines.com
Keith Craft, Kuntz & co., MPG heads, TEA, FTI, Chapman racing, Mikes porting service (mikesportingservice.com), busch racing (from HC5.0), Ford performance solutions, Joe Scherman (who is having some port work done on himself as we speak....the ol' ticker is getting a port job), Coast High Performance, and many, many others. Just do some searching and you'll find most of the info you need.