I kind of like SSs also here are a few pictures of my 1973 Orange ones. Scooper's way of doing the crank swap is the expensive way to do it. The way Schwinn recommended starting in 1974 and sold kits for was to use a BMX conversion kit with a 1974 and up Le Tour crankset. Other cranksets can be used also. You can still buy the Bottom bracket at a BMX shop for under $25 for a good one. In the BB pictures there are two BBs. One as it comes and one with the parts laid out. Doing the swap this way with a used crank you should be able to get it done less than $50. Roger