Your Southbend bamboo rod is going to be heavy by today's standards so it will take a heavy reel to ballance it. Probably over 6 ounces. Pflueger Metalists 1495 and 1495 1/2 were popular on that rod but I don't know if they have their quality back up yet. Its worth a check out. You might find a Pre-owned one for a reasonable price and I'd go that route before taking a chance on a new one. There are not too many other reels of that vintage that I remember but I'm sure that the guys on this board can help you out.

Ol' Bill