NAPA's Echlin line of ignition parts are made by Standard Motor Products. Generally SMP's parts are great, as long as you avoid their lower "T" suffixed line of parts. However, as I mentioned in
your other thread, the OEM parts you require can be purchased online for roughly the same price as aftermarket parts (there's maybe a $20-40 difference in the end) so why chance it? I would go with OEM in your case.