That's what we will do---3/8" tapped hole on the front of the passenger side head. How do you come up with those pictures and info?

I'd like to use a spring-ring cable for the ground like the positive one we already have. I believe the positive cable is an NOS one--I bought five spring-ring cables from a dealer years ago who was purging his old Pontiac parts. One of them looks to be the right length with the protective braided sheath near the starter and has the extra feed wire for accessories.

Can you give me an idea of the length of the ground cable? Can't measure until we get the engine in and measure from where the battery will set.