It was a full k&t port,pistons, domes setup. It ran well with various exhausts, but had noticeable changes from each to the next. Yes kim said he liked shearers on his engines. While talking to Jim he said he made the changes needed to for the alky and 10mil setup. Whatt he changed I couldn't tell you. I'm not biased to anyone or any shop. I'm in the game to go as fast as possible regaurdless of who I buy from.