mafac racers are among the best centerpulls I have ever used. Just clean up the brakes she has with some steelwool and give them some care, replace the cables and pads and they should work great. I use them with the flatbar levers by shimano for use with road brakes. They work awesome.

Otherwise I would try to find somthing newer.
Cantis wont work unless you have cani mounts.