gm part id?

Hi, first day on the site, hope to learn a few new things! I recently bought a set of gm chrome mouldings at a yard sale, but have no idea what they go to. They are GM p/n# 3870750, GR.12-116, moulding kit. Any info would be appreciated. Thanks, Chuck

 

A picture would be a big help, or maybe if you could nail the decade so we'd know which book to look in.....

 

The molding is a front portion of a rear wheel opening molding for the right rear of a 1965 Corvair car. It fits 2 door, 4 door, convertibles, Monza, and Corsa models. It does not fit the standard models.
Hope this helps.