Does anyone have a work around for fitting more modern horizontal mounted brakes to an old Peugot U08? I have some MAFAC brakes, which I'm aware are great, but I'm stuck at home and wanted to try making some modifications to my bike(first time tinkering). I bought some Shimano Sora calipers before I noticed how the back brake was mounted (idiot). Was wondering if I could just drill a new hole but thought it might weaken the metal. Any help would be really appreciated!
I've also sawn my handlebars into bullhorns, bought some Dia-Compe DC135 brake levers, and swapped out the old bottom bracket and cranks. Can post pics if people want.
Cheers
ps. tried to post a pic but it wont let me!