Where should I start?

[jerem80l]

First off, whats the best one to start with? I just bought my sis a zz se and I find myself playing with it as much as she does.

My question. Where should I start? What can I replace, like could I ghetto mount a larger motor, build a tiny chasis and take the circutitry from another to put in it?

What other mods have been done?

Thanks