I would go with the Losi SCTE 1.0 and a Viper Copperhead R system with the 4500kv motor. Actually I just did this for my son, great for running with his buddies in the back yard and if he ever gets into racing it will be a worthwhile truck to run there as well. And not too expensive. The SCTE roller is like $225 new now, the viper system is $120 then all you need is a radio, steering servo and batteries.