I bought one of those RUSH motors for a beat around car once, it was slower than my old Roar 96 Stocker (that is before they were rebuildable) Those motors arn't worth the plastic they come in if you ask me. I have had decent experiences with the Trinity Speed Gems motors, but again just for a beat around car. A hand wound motor is worth every penny if your racing. A Lathe is nice too, I use a communal Twister Lathe thats probably 20 years old and still works great. If you can get your brother to go in halves you can pick up an integy lathe pretty cheap and it will do the job.