FYI.. David's Yacht Service has newly-cast manifolds. Having grown up w/ International Harvester tractors, I may be biased, but the Palmer M-60 is a very solid, well-running motor that is pretty bulletproof. For anyone choosing to stay w/ their Palmer, finding "most" replacement parts are not an issue at all- (but if you get a chance to pick up a spare Palmer 60 manifold or a distributor, jump on it).