There is like a 40 page debate on it in the offroad section. Obviously the Slash will struggle against the SC10 in every category. I think the best thing you can do if you are going to run the 2 cars together is just allow it to be and open class. Run what ya brung. Who is going to spend 400 bucks on a SC10 and then put a traxxas titan motor in it? Talk about a downer.