GTS is a model designator, in Europe a "GTS" could have received upgraded brakes, and other performance features. Sometimes all a GTS got was a higher price tag to go with the emblems. (grin)
In the USA an "official" GTS was only a trim package, as the DOT saw it as a new model and required crash testing, and re-certification etc... which DeTomaso and Ford declined, so the USA GTS cars were "cosmetic" upgrades. USA cars do have "GT" in the VIN. (THGTXX0NNNN)
See my "GTS" post earlier for a link to USA details.
Chuck
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