Was this a rare option on a 88 T-Bird or was it pretty common?
I think it's common. Not really common but I've seen quite a few 87-88s with it. My car has it, along with every other option but a sunroof and block heater.
Ever have trouble powering down the antenna ? Mine goes up fine...but wont go down (all dirty jokes aside ...aha)
This one works fine , up and down !!!