If you are talking about the metal plate inserts on the side marker light that came on early cars,the ones that said "SS396", they are hard to find. You might try True Connections in Riverside CA (909)688-6040. I talked to them in Reno at Hot August Nights(swap meet) and they said they might have some good used ones(inserts) from their source they hook up with at Fall Carlisle(I think). I never followed up on it myself,(used the cast piece from Trim Parts) but it might be worth a try. I also had a discussion with Trim Parts Inc. (Main source for GM Emblems) earlier this year and they have no plans to reproduce the early piece. Good Luck.
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