Couldn't advise you on that, but I'd be willing to trust what Edgarton is telling you. He seems to know his stuff.
How much is he going to charge you for the camshaft? I have a spare camshaft that I was thinking of sending to him, but I'm not sure if it would be regrindable, since I think it's a regrind (to stock specs) already.
I guess my remark in the other post about you needing a rebore, is a moot point if you're planning to go 60 over. Keep in mind though, that 60 over is not going to add a huge amount to your displacement number, maybe 3 CI or so.
All the other stuff you're doing is where you'll gain the most. I can't wait to hear how it comes out.
