I'm pretty old but Toca 2 was somethink i played the hell out of and the British GT was so awsome to watch back then. Quick spoiler Volvo won it that year lol.But it had some great's racing in it I really think this game would suit this so well
The only thing for that era now is andreasfsc's supertouring mod for Race07. Has all the cars and the tracks are available for the game.
Ha! I remember TOCA2, very good and fun game. I also raced Sports Car GT once upon a time too. But yes, more racing series like the BTCC and others would be great. I was just thinking of making a wishlist post asking for Trans-Am, lol.