Ok I bought a 440 to up grade my cuda from the 318, the seller said it was re built.I was taking the plugs out to hook up the exhaust and noticed thay were ac delco 7 they look new except the orange paint. my question is will they work? I can't find anything on line and summit didn't have a listing for a ac delco 7. thanks I found the 7 on summit but no cross reference
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