Heads Casting Numbers
My dad called and said he had a set of spare heads laying around the barn. I asked him to get me the casting numbers off of them and this is what he sent me:
83217369 (He said the "8" could possibly be a "3")
GM 12
The trouble is, I can't seem to find out anything based on these numbers. Anybody know how to read these, or point me to somewhere where I can find out about them?
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