Got my Scorpion rockers yesterday. Boy, Summit is quick with deliveries. I know little to nothing about rockers, but these look like real good quality. Being aluminum, I'm surprised as to how heavy they are. I did find 2 of them that had their upper left corner beveled. As the tech guy mentioned, they must be for #1 and #8 cylinder. I'm thinking the exhaust valve on each cylinder but will have to fit them to see. I also read their pamphlet in re. to adjusting these/valves and it was a little confusing. I'll reread it several more times and I'm sure I'll get it. I think I'll also ask the machinist to demonstrate on one of the motors there the correct way to adjust the valves with these rockers. Looking forward to getting this back together. Speaking of that, after measuring for push rods and I'm ready for the rockers, I was thinking about soaking them in oil for a day or so. Kind of getting them pre lubed. Is this a preferred method or it doesn't matter?? Thanks, Carmine.