Can't find an appropriate Buick or general old car newgroup to ask, so maybe
someone here can help.
I've found what I think is a replacement heater core for my '63 Buick
Riviera on eBay. It's listed with inlet-outlet dimensions, size, etc, and
what appear to be original part numbers, but...how can I cross-reference
this information from the eBay listing with official GM parts listings to
make sure it's the real deal?
If someone told YOU that a certain heater core fit YOUR Camaro...where would
YOU look to make sure before putting your money down? (Assuming you don't
have this information already memorized...)