To each his own. I like the thin steel or alum. sheet valley plate for the victor style heads, that turn up beside the head at a 90* . I have a made a large site glass to run in mine. I`ve had it off two or three times w/ no trouble sealing it. Never leaked, and is neat watching the lifters and pushrods work. I`d like to have a set of valve covers like the ones Andy uses on the dyno too, they`re about the only covers I would break down and buy ,(providing, I could afford them!) !