500ci rebuild steps...

I haven't had the chance to use the Line 2 Line coatings myself but a buddy who is a motorcycle road racer swears by it.

BTW, which heads do you have? Seems strange to use that short reach plug in anything but an OE cast iron head.

You have good eye, for lack of a photo of plugs from this 500ci I used photo of my plug from 452 head that has identical coloration and all... small stretch I guess ;-)