IMHO
germany, Porsche's race heritage is the biggest in the world, remember we are talking road cars, and porsche as won more gt races than any other.
Japan- the NSX has the best chassis in the world, i mean, keeping the pace in a track with an F50 and a 911 GT2 with a lot less power is really impressive. it as the best gearbox i've ever driven, and i've driven one of the first models, i can´t imagine how the gearbox is now! The Nissan Skyline, another great car born out of GT racing, i didn't get CDOZ's comment, a mustang beating a Skyline? if they where racing down a pinetree i'd believe it!
Italy- for the monstruous and outrageous looking supercars
Britain- Becoming stronger and stronger in sports cars and supercar building, i mean, TVR rules, Aston martin, Lotus, real driver's cars.
Just my opinion
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