Does anybody know where to get paint codes for a 73?

bkcraun try this place.

http://www.paintscratch.com/

B

http://www.novashop.net/decode/trim/index.htm

Also they are in the 1962-75 Chevrolet Parts and Illustrations manuals available in (2) large books or you can go the CD route on ebay. These are great resources if you are restoring a Chevrolet.