You may want to reach out to Classic Machine in Leesburg. Evan is an old school Jeep guy and has a nice machine shop. He has done work on the heads for my Scrambler and my 1949 Willys.Hello there! I've heard nothing but good things about BR4x4. I've got a carb'd AMC 258 that says "we have a new pope" a bit too often for my tastes. Put in new valve stem seals, but it's really the valve guides that are plain tired. Going to do a leak down test this weekend to see how the rings are. What machine shops do you recommend for a head rebuild (I'm in Herndon, but not averse to a drive). Thanks!