Hmm... Any way to date the hubs? How about the rims? They are the "white/cream" color of the bike with a dark "red/black" pinstripe. Are they original?
Does the actual hub have any markings? Some were dated but I'm not sure about yours.. If the rim pinstripe doesn't match any other color on the bike it might not be the right wheelset..but to know for sure you'll need to ask the Roadmaster experts, like the bunch over on the CABE board. I'm a Roadmaster fan but in no way an expert.