02 sensor interchangeability?

[my$100project]

I went to autozone today to see if the 91 thunderbird 02 sensors with 65000 miles were interchangeable, it seems the universal ones are different part #'s. Anyway's will any EFI 5.0 o2's work for the H.O engine? Looking for one but dont have the $40.00 when cleaning a used one off works the same. (The old one is busted)