Need help selecting components
 

I'm rebuilding an S-10-S from '77 and want this to be my sweetest ride. It is likely my last rebuild so I want to do it right. I have located and purchased NOS Suntour Superbe front a rear derailleurs. They came out in '77 so they are period correct for the bike. I have a line on some Superbe brakes that are lightly used and hope to close that deal soon. The front chain rings are in good shape and I think they are Suntour Cyclone so I plan to keep them. I will likely need a new headset, freewheel and chain and I want something of comparable quality to the Superbe. Any suggestions?

Tange levin alloy headset, Suntour Winner Pro Ultra 6 (depending on spacing...but Winner Pro) and I don't have a suggestion on a chain. I buy SRAM chains myself.

Suntour Winner Pro Ultra 6 <---- Where can this be found as a new item?

Ebay......Do you know what spacing your rear dropouts are? If it's 126 you can use a standard Winner Pro 6 speed or an Ultra 7 I believe. The ultra part means the cogs are closer together so you can fit 1 more gear in there...

P.S.Bid on them with the BIN price of ones listed in mind. They rarely go for the amounts they ask for BIN.

Picked one up on Ebay not long ago myself.