OK, here's a new scenario. Doing some more research it seems that Nashbar sells rebranded Microshift components. So would it be possible to get Nashar brifters:
Nashbar N-9 9-Speed Dual Control Shifters - Normal Shipping Ground
Nashbar RD:
Nashbar 9/10-Speed Road Rear Derailleur - Normal Shipping Ground
And use that with the existing Shimano 600 crankset and front derailleur ?
Last edited by rms13; 08-19-14 at 11:41 PM.