Can you still get chainrings for a 1970’s era DuraAce crankset?
yup, 130 BCD starts at 38T, and more.. lots of aftermarket chainrings sold.
a new rear wheel with an IGH is a whole different way to use the 120 wide rear dropout frame ,
I still can get 3/32nd thick Cogs for my 3 speed so 8 speed derailleur chains work. double chainring Hybridizations .