I have Golen building my 420 right now, he's just wwaiting for me to pick up the heads for it. He's incredibly talented, has top-notch machinery, A+ workers and lets you tour the entire shop as the guys are working, it's really amazing to watch them work. His catalogs are really detailed and very professional, and I haven't heard a bad thing about the man or the beastly units he puts out. Plus it helps he's only 20 miles from me...