nos vs repop's

So my $0.02.
Chrysler had many manufacturers for many parts. Always beating each other against the other for better prices. So one car made 3 months later than the first car could have different parts- same part number. So what you are stating is “oem” against aftermarket is a tough call because even the quality of Ma MoPar from say a side fender light on a 72’ Dart to a 76’ Dart could have been a major quality or manufacturing process- same part number. Both OEM.
Then companies once they had the “build sheet” for a part reproduced that part for years after as a parts counter part. They (the manufacture) got sold and resold and the part lost something when bean counters got involved during and after each sale of the company. Look at Fram filters and how the quality dropped from Fram to who ever owns them now.

my long winded point is- even the brand new 45 year old part in the box with shelf wear may not be as good as the original 46 year old part that came on your car.
Let alone the eBay seller that takes a OEM part out of the OEM box for their car and drops in a “copy part” and sells as OEM. PCV and gas caps are notorious for that swap and sell move.

Buyer beware, ask before you buy. Make sure you agrees with return policy. Check references. Let’s face it- most aftermarket re-pops are at best clones. BUT there are some companies making better that original parts. Syleng1