This comes up here every few months so if you do a search you should find the old threads. In the DC-Baltimore area there's Billy Anderson, Burtonsville Machine Shop, Mancini's machine shop, and Jackson machine shop. I'm in Laurel so those are the ones I've heard the most about. North of Baltimore off I95 there's frankg. South NJ there's Keith Mease. North NJ (Kenilworth) there's Jack Merkel. North of Philly near the Turnpike there's Dale Cherry at Berrel's Auto. Don't know of any shops in PA west of Philly or in MD west of Baltimore.