Thanks to everyone for the excellent info that is available on these forums! I've been trying to chase down some spark plugs. When I went looking for the NGK-TR55 I was told that it was an "old " number and wasn't available, and they listed two replacements. Both replacements were identicle except for the gap? Don't know if that meant that they supposidly came factory gapped, or what? The guy at the counter (advanced auto) also said no body offered copper plugs? That is my main objective, to get copper! I know the plug thing has been inked to death, I don't think alot of people realize how important they are!
BTW, I'm pretty sure that I now have first place for being the fossil of the group (53 years and still love a good burn out) crewed for an alcohol funny car for a while.