Ken,
Desert Valley Auto parts http://www.dvap.com here in Phoenix has a couple of relatively rust free ‘63’s. They are usually pretty expensive, but may be worth a call.
Try West Coast Sheet Metal. Larry Camuso at (408)286-6537 Mon-Fri 9 to 5 pacific time. They are on the west coast and specialize in Oldsmobiles and salvaging good sheet metal from cars in their no snow/non-salt climate. I got a very good hood and right front fender from them.
Looks good. Are you doing a complete restoration on this car? I saw in another post that you have two of these cars. What have you done with the other one?