As the proud new owner of an 87 Siverado 350 tbi I am starting to collect tune up and repair parts. You guys seem to like the oem AC Delco stuff so I have foumd that the original dist. cap is probably a D303A but I find 2 rotors listed as oem: D470 and D447. Anyone know which is correct and what the difference is? Anyone prefer another brand for these parts?
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