I want to run roller rockers but I also want to use my Offy cast aluminum valve cover on my 250 Chevy six. I know the aluminum rocker noses are too wide and bulky to fit under the Offy cover but has anyone been able to get the stainless roller rockers to fit. They look to be a alot thinner and are more tapered toward the nose. I know a roller tipped stamped steel rocker will fit but I really want to go with a full blown roller rocker. Any ideas?