Carburetor size Question

Gear Vendors is about 45 minutes away from me. Drive right past them when I go to San Diego.
I have called them about return units or seconds/ blems but they said they don’t have anything like that so buying a new unit is what I would have to do.
Just get an A500 or A518. As close to a bolt in as u can get. Any wrecking yards near u? Kim