Only 460hp

I'm not chasing ET's. The car hasn't been on the track and may never.

Put it in the car, drive it and have fun...

Your statement says it all. You aren't chasing et. Other than bragging about hp, the rest of this exercise means nothing in the big picture.

It's also fat according to the sheet... could be 20hp right there. Work on the carb a bit, maybe take a jet size or two out of each end.