I don’t think I’ve bought anything with a core, my whole restoration was from rock auto. I did break my Aisin clutch installing it and I emailed about a replacement. They said to return the old one and they shipped a new one without any hassle
My opinion: they sell so many parts that I highly doubt they’ll care or notice that it’s not exactly the same. It will look almost identical and say Aisin on it so they’ll know it’s for that vehicle and not some random car.
Napa is similar they check cores but they don’t oook up part numbers they just make sure there’s something in the box.
