I got off of work early today, and ran to Oreilly's to get the caps. Once I got home I inspected the caps, and tried each cap on my 79 Monza. Both caps went on securely. The funny thing is that I ordered the parts, and told them Master Pro, and the part numbers. Master Pro must be re-boxed Murray's. Anyway, the 6746 will need to be re-clocked, and the 6713 could be used as-is, but for a perfect fit, I would re-clock it as well. There is plenty of material, to drill new holes, and re-clock them. Brad
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