You're in the minority if you actually think more GT350s will be on an open track than the 1/4. ...
Who? Me? Because I said no such thing. The majority of GT350s, R or not, will be attacking back roads and mountain passes. Like most all other sports cars, they're unlikely to see a road course with any regularity; 1) because of the scarcity of road courses and 2) most people don't want to risk balling up their theoretically irreplaceable car.