I'll say this before one of the moderators does, but please, please, please use the search function to avoid clogging up the boards with new threads for questions that are answered eslewhere.
Best place to look for what you want is on GT3 homepage, download the Prizecar list. It shows you the complete list of cars that you can win for any given race series in each of the leagues.
In short though, GT World Championship in Pro-league is where the GT40 Racecar is hiding.
