A few months ago I bought a vintage 1972 Schwinn Paramount P-15. It is nearly original -- all Campagnolo NR (brakes, headset, triple (52/49/36) crank, seatpost, Superleggieri pedals, HF Record hubs, etc.) The front derailleur is the classic Record, and the rear derailleur was upgraded to the Campagnolo Rally. The wheels have the classic Campagnolo Record HF hubs laced to Weinmann 27x1 1/4" rims. The rear dropout spacing is 120mm, which was typical for the era.

If I wanted to turn the bike into a museum piece and hang on my wall, I could send the frame to Waterford and have the labels/decals restored.

But I really bought the bike to ride it. The main complaints so far is the drivetrain shifting. I'd like to upgrade the drivetrain to a wider-range triple crankset, and put either a new 6 or 7 speed wide-range freewheel on the rear. I really don't care for the existing freewheel (no idea if it is orginal) -- the largest cogs are the style with every other tooth missing--I'd like to replace it. What was the original freewheel on this bike, and does it shift well? I don't mind the Campy downtube friction shifters, but I'm considering bar end shifters as well.

The brakes are Campagnolo NR sidepulls, which work well. If I wanted to put new 700c wheels on this frame, though, I would need new brakes -- will Weinmann centerpulls do (610/750)?

Any suggestions for a more modern drivetrain (derailleurs/freewheels/crankset)?

Thanks for any advice