Would it be a sin to put a Japanese Dia-compe 750 brake on the front of my wife's Peugeot Mixte?

I scored a Peugeot Mixte that has a rear Mafac Racer brake on it but has no front brake. I have a Dia-Compe 750 that looks like it will work. Part of me wonders if the Japanese front brake will get along with the French rear brake.


Also, eBay sucks. I can only find pairs of Mafac brakes and they go for too much. I just need a front brake and all the bits...