so i was thinking of designing my own valve covers for my y-block but all of my parts are like 5 hours away and stashed in various storage. So i was wonderin if someone could help me out with some measurments. I need things like the height of rockers, the width to the inside of the mating surface, the width to the outside of the mating surface, the length to the inside of the mating surface, the length to the outside of the mating surface, and the position of the bolt holes. I know this is a lot to ask but if someone has a head laying around that could pull some ballpark figures for me just so i can have some guidlines and than ill fine tune it when i auctually go to build them whenever that is. Thanks for any help.