I'm looking to upgrade my beloved '73 Raleigh 3-speed Sports with a new set of wheels. I want to keep the stock fenders and am leaning toward using CR-18 rims. I would like to use the Sturmey-Archer dyno hub with drum brake in the front and upgrade the rear hub to either a SA 8-speed rear hub or a Nexus. Will these hubs fit in the bike? Do you have any other recommendations for wheel upgrades? Thanks in advance for any replies.