Going to rebuild my '60 401 nailhead right, that means an overbore and new internals, among other things. The whole balanced rotating assembly and whatnot. My questions pertain to piston rings. 1st ring question. What sort of rings do I want? Steel? Moly? Chrome? Gapless? I will be driving it daily, with occasional hard romps down the freeway, HAMB drags, and whatnot. Both extended highway driving and stop and go city driving will be commonplace. Motor will be stock as possible. Stock cam, very mildly worked heads (some casting flash cleaned off), stock 4bbl, etc. Don't have cubic assloads of cash to toss at this motor, but want it reliable as possible. I know, can't have one without the other.... 2nd, the local parts stores, including Napa, have part numbers but can't get the rings...???? Whatever that means. Apparently I can't get em local, in short. The local "good guy" engine rebuilder laughed at me, actually laughed and hung up still laughing when I called. Dickhead. So, does anyone have any sources for a nice set of rings that aren't going to cost a small fortune, if such a deal exists anymore? 4.2175 bore diameter. Racefab? Nailhead freaks aka zman and the like? Glad to supply more info If I need.