I'm replacing my cracked late 70's Trek frame with a 90's Schwinn Traveler that I got for cheap on ebay. I know most of the parts will swap over. I know that I'll need a 700c wheelset, but I've been wanting a new wheelset anyway. The only thing I'm not sure of is the brake calipers. Will I need to buy more modern road calipers or will the 70's Dia Compe calipers from my Trek work if I adjust the brake pads up higher? Has anyone tried this? Most of the information out there is on making old calipers reach 700c, not the other way around.