TPI Cam size

Hello Gentlemen,
I need a little help making some decisions. I've traded for a '48 Chevrolet Aerosedan. I've got a 406 SB to go in it and wanted to put a Tuned Port on it. My question is , what size of cam should I go with. I want good performance with a little sound. It's running 10:1 flat tops 2.02/1.60 valves ported and polished, flows real well. How big of cam can I go with the TPI? I don't really want to get an aftermarket computer if I don't have to. Has anybody out there did any of this? Thanks in advance for any help or advice.