I don't think I'd abandon it just yet. Mopar says 20 over - but for sure they are trying to be on the conservative side of things - and there sure isn't much difference between 20 over and 30 over. as it is already machined I'd get it checked. next time go for as little over bore as possible and still clean up the bore. wall thickness means more than a couple of extra cubes on an overbore.GOLD74DART said