I never tried platinum plugs, but iridiums glazed over and misfired. I've been pretty happy with my autolite coppers. You would probably want to look into some autolite 605'*.

Thank you all, I will be taking some pictures soon and posting them for all to see.
I am in Edmonton Alberta, this is my 2nd supercharged car my first was a '94 Park Ave ultra I sold it a few years ago and wanted another supercharged car so here it is.
Don

welcome to the forum!