I have several dozen spark plugs for the 2.0 Pinto left over from a Trans Am Pinto I owned back in the day. The buyer didn't want them, so I wound up keeping them all these years. I don't remember all the heat ranges, but they are both Autolite and Champion plugs, all in the original packaging. There are a few (maybe a dozen) that were run in the car, but the rest are brand new.
I can check them out for anyone who's interested. Whoever that might be can contact me for more details. I remember I laid them all out, inventoried, and took pics of them once. I bet I still have the pics. I'm pretty sure I never sold any individually, so the pics/inventory should still be accurate.
Btw, the Trans Am Pinto was raced in vintage by the guy I sold it to, and now is back at Galpin Ford in Sepulveda, CA, in the Galpin museum.
Regards,
Cossiepinto