AC Evaporators, Condenser and HeaterCore Manufacture needs help from the ones doing the installs
This won't cover everything but what about offering a new condenser for a really discounted price if they send you the old, O.E. part to cross reference or duplicate? That will give you an actual factory part to catalog.
It won't help people that want to add a/c to a car that didn't have it if you don't already have a reference part, but it will help most people.
