I also have NOS hubs available which were built into used open pro rims plus boxed Shimano 600 and Dura Ace freewheels should these be needed. I can include wheels with NOS hubs (or just the hubs but the spoke holes will have marks from assembly) and I have a selection of NOS Shimano 600 and Dura Ace 6 speed freewheels.
eBay