About this 3D model

Note! This is an obsolete version! 64:1 Gearbox 2.0 is much more likely to work: http://www.thingiverse.com/thing:382 The primary problem with this one is that there's no support setup for the motor. Everything else should be printable and workable, although of course without a 3D printer of my own I could just be blowing smoke. I'm planning on making a set of "horns" for the output gear-- best idea I've had so far for that is to have the maker glue them on. I think I can add a clip for the motor, but I'd have to decide on a motor type. Suggestions?