If I remember correctly the two end rockers were rounded to clear the valve cover in some of the roller rocker sets sold for the sixes.
Would a spacer between the head and the and rocker cover work? Have you seen the cover Tom sells? It has more room inside.
Some guys on the HAMB have adapted repro Frontenac covers it get more room. I tried to adapt a GMC but lacked the skill.
MY Trys Another
