There’s not really going to be a center to center because I’m just punching a hole down through with my drill press and elongating the hole with a porting burr as needed. And a slanted hole it will be. My measurements would do to no good.
Ok, I was just kind of wanting a starting point, I wish I would have measured what I needed before I got rid of my W2s.
I have a set of w2 rockers , and an old set of Procomps. If I weren't so lazy, I would get something done...