Okay, I'll try and take it to a shop today or tomorrow and see if the calipers fit 700c rims.

I'm not really trying to get all 1979 campagnolo gear. Just hopefully 1970s stuff and it seems readily available.

From what I can tell I need the following things:

front derailleur
rims/tires/freewheel
down tube shifters
replacement grip
seat
brake levers
chain
brake lines

I've found everything but tires/rims pretty much instantly. I was planning on just getting the nicest, cheapest set of downtube shifters I could find but now I'm not sure. What are friction down tube shifters? Could someone give me an example of the possible freewheel/downtube shifter combinations?

BTW, this forum is great. I've learned a lot these past couple of days.