I am putting the Mamba max pro 2400kv in my stampede. Two questions. First I was told to use the slash chassis, is that Really nessisary? Also what is a proper gear size to use for pinion and spur? I manly bash and love speed, but love the wheelie thing to. What I don't want is something going over 60 mph, but I also want a setup that will keep the motor ice cold on a 3s lipo.