gas cap stolen..will a 71-72 gas cap work on a 63?

I recently left my cap on the roof of the car after filling up (idiot) but I found out that the Stant 10800 will fit fine and is $8 or so at just about any parts place. Cheaper online. It does not lock though.

Link at Rock auto http://www.rockauto.com/catalog/raframecatalog.php?catalog=153&partnum=10800&a=FR153-10800-66952

Link to thread with info about caps http://www.forabodiesonly.com/mopar/showthread.php?t=132518