Ok... here is a good one I recently got an IF cross frame in reasonable shape. When I went to look at it closer, I discovered that not only were the canti bosses missing, but the part for the spring mounts are one... Normally I thought the spring mounts were welded onto the frame?
The only options that I can see are getting the spring mounts welded on by a frame builder. I do not think that I can use another type of brake?