wagons were not available in a GT model or trim. I have a 1975 vega/cosworth with a 350 v8 crate motor. i took a non-restorable cosworth and moved all items including trac bar suspention. and all performance options including number plate guages interior etc. then added a v8 motor. however you still cant call it a genuine cosworth even though every item was installed in my car from a genuine cosworth.If you have a GT wagon i have never seen one its not a "tribute car" either because it was not available in GT form. however you have a very nice car don't take my comment the wrong way. It is nice to see something different instead of SOS vegas enjoy again nice ride.
