Wrong, as a blanket statement. The very rare Gr-3 Panteras built for street AND lower-echelon racing could be ordered with more powerful engines, upgraded brakes etc, but early so-called 'Euro-GTS' cars were less capable cars than US-spec machines IMHO. All US machines included undercoating, extra bracing developed by Bill Stropp (West Coast) and Holman-Moody (East Coast), safety glass etc which made them heavier, while some Euro countries did not require these and thus were a 150-or-so pounds lighter but with std engines, brakes etc. Then, when Ford took over complete mfg responsibilty for Panteras in mid-'72, ALL non-racing Panteras were identical, as far as we know. Finally, the post-74 Panteras (GTS, GT5, GT5-S) could be custom-ordered with literally anything you wanted, so they were potentially more performance-oriented. But once imported to the US, they required aftermarket smog controls, cat-converters etc, etc before they could be reistered. Rust is a MAJOR problem in such private-import cars; if they could pass the countriy's yearly inspections (which make CA smog checks look like a joke!) they must be exported or scrapped. Guess where a number of such decaying cars wound up, sporting new paint & undercoating? My advice- be very careful in inspecting such machines before laying out cash. Horror stories abound....