What about those Xmod motor hop up kits from Radio Shack?? They look like the same motor that these subs use. Also you get four per pack different ones but you may put a more powerful motor for the power and or the steering motor, or dive motor.. you have 4 options per pack and they are only 15 us dollars for 4 of them. ALso those Xmods are NEAT little cars gonna get one tomorrow (Payday) Thanks tom .