I've got a little work to do on my bird. It's low original miles (48K), 70% original paint, engine never cracked open, etc. Specifically I need the heater core repaired or replaced and also the washer bottle (I cracked it - oops).

Do I get just a repro bottle or do I look for a used one that has the right codes? Same for the heater core. I'd like to try and keep it as original as possible for the next owner, but I wonder if anyone cares about those items?