1 1/4 wider fender with 5.5" rims?

[Bullyboy]

We have a problem finding rear fenders and CCC only sells the widened fenders for the 73' super. So if we run the 1 1/4" widened with the 5.5" stock chromies what tire will fit inside the fender and look stock? Anyone run this combo? I know we can run up to a 215/50 on those wheels.
The car is in two pieces so I can't put the chromies on with the 165s and do some calculating.
Someone please help :silly: I am getting a headache.