if you are not afraid to ruin your paint job (you can repaint it) i would weld on some 10mm x1.25 (not 100% sure on the thread pitch, you should buy the studs that i am about to mention first then match up the nuts) nuts to your frame and fork (provided its a steel frame) install some cantelever studs to the nuts you just welded on(local bike shop sells them) and install some v brakes, IMO sidepull brakes just don't cut it, v brakes or disc brakes work great.