I would use the following items for a fixed gear road bike project:
-165 or 170mm track crankset, or a crankset suitable for a fixed road bike. Condition does not have to be pristine or even period correct, just something that is maybe unique and inexpensive. Prefer something with a campag taper.
- 130mm spaced fixed/ freewheel rear hub. or a rear wheel with that type of hub.
Thanks in advance,