the flange/yoke that the drive shaft connects to ,,which in turn connects to the Diff,, broke on me and I need a new one,,,

66 coupe 200 ci 6 popper, 3 spd manual tran, 2.8 turn. 7.25 gear
I've looked all over the internet and can't find one,,can find everything else,,car is at tri city tranny and they can't find one either

can you advise or help

thanks

az1966 mesa,az