I've been enjoying the following race, the Amateur All Japan GT Championship race with a stock Dodge Viper Concept. After trying several times, I finally came in first. It was a blast, as well as a challenge. Give it a try! Another good race is the Amateur Japanese Championship which is the very first race in Am League. I used a dealer-stock (no oil change, no tires) NSX Type R. Only one AI car was difficult, a NSX Type S, but it was a fun and close battle. I think the AI cars are slightly moded for extra HP because he was able to blow past me on every straight, but I was able to catch up and even pass him on the turns. The other AI cars are nothing to worry about.