re: Huffy Santa Fe Motorized Bicycle
I'd get rid of the cheapo kickstand if it keeps vibrating loose and go for the double legged variety. Also, Locktite is your best friend on these builds, particularly if you're running with straight forks with no suspension. I rattled my first build's nuts off (literally) on a 10 mile trip and wound up almost dropping the motor.
It's fairly easy to fabricate a front motor mount out of muffler clamps that can be found at the hardware store. I fabricated mine out of one of them and a couple inch piece of flat steel which I drilled holes in to fit the muffler clamp posts and the motor mounts. The finished product cost about 7 bucks and was identical to the one supplied on another one of my build's kits.