IF your new to racing, just learn to drive first. Check out some other Losi drivers car and ask to see what they're running. Spec class runs certain motors for them so ask at the track. If your running "stock" class use a good stock motor of major name brand. I run the P2K series, they have tons of low end torq that's needed for the truck. Stay away from the P2K2 (black can) it's a high rpm motor and is more suite for the buggy. If you could describe what kind of track your running on and track surface that's important info for "set up."