9 port head numbers?
hi guys i've got a few heads off some red 6s whats the deal with the numbers on the side of them? one says "3 D4" then "12 L" or "2 L" and the other says "Q or G 79" then "3 A" and another 1 with "E1 72" do the numbers mean anything or just casting numbers? anyone know what models they came off? what should i put on my 186? thanks in advance
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