as best i can tell, the GTR was made only for racing. is that so of the GT? if that's not the case, were they imported into the US? did folks race either or both of these diablo variants? did they do well? i just don't remember hearing about it, but i'm curious as to how they fared. tia, doody. ps: i also see mention of Diablo "GT1" and "GT2" cars. ditto as per above.