I posted something like this in mechanics but figure some people here know the answer and don’t read that section.

I understand lots of people want to keep a vintage bike stock. But let’s say someone had a ‘73 World Voyageur and wanted to use a modern set of wheels they already own from a ten speed carbon road bike. The goal is to get better wheels and more tire and gearing options. I think the original is 14-32 five speed. The frame would be sent to a frame shop to be widened to 130mm with new brake post.

Would an 8 speed 11-34 cassette work with the vintage bar end friction shifters and Crane GS long cage derailleur?