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#6
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Might have something to do with the suppliers/manufacturers who made them for GM. Specs probably called for them to be protected ie: 'coated' in something. If the BB pulley supplier was also doing a lot of brackets/clips that were already being phosphated maybe they just threw the pulleys in.? Good question Chuck
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70 L78 Nova Fathom Blue,Bench, 4spd, F41, 3:55 71 Porsche 911 Targa |
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