Reviving an old, cheap, GoCart.... Maybe?

[rawfuls]

So, quite a bit ago, I picked up this GoCart for ~$100 for my birthday...

Lately, I've been thinking, and a friend kind of sparked my interest into reviving it w/ a BL motor... but after thinking about it, it may not be too reasonable?

Just curious for other's insights.

First off, I want to keep it around ~$200 for the revitalization.
Second, the motor only powers one wheel... the rear right wheel..
It looks like there's a solid axle back there, but it looks like it's just rod to hold the sides together, a reinforcement.
I ponder if it'd be possible to pipe in a thin pipe inbetween this rod (not even sure if it's hollow, I assume so, though), and then make it a solid axle, so power gets to the two rears..
Thirdly, awhile back, one of my brother's friends hit a pole, and damaged the front horizontal steering rod.. I'm pretty sure this can be fixed if I just hammer back the other way, isn't a huge issue, but am getting some toe-out on the front.
Fourth, the wheels that are currently one, are not staying. They're solid rubber wheels, and absolutely suck, they grip nada!
I plan on grabbing some new wheels (like tractor, wheelbarrow, lawnmower wheels) from harborfreight, but not sure what the bore size should be.
Wheel rod measures about 0.471", so it's right inbetween 3/8" and 5/8"...
Fifth, needs to stay electric, no gas/nitro.. Brushed or brushless, both are welcomed setups.

My plan is to make this into something actually fun, something I can ride up and down my street, and maybe even conquer some slight hills.
I don't need a monster, just something that will be fun to ride.

Thinking:
No welding.. Would like to keep this pricetag as small as possible, ~$200.
Oh, and, if ABSOLUTELY necessary, I guess I could grab some new lipos, but that sounds pricey, a bit hard to maintain [since the GoCart would be living outside]. I'd like to keep using the Sealed Lead Acid battery since it's already in there and already mounted. 24V 16Ah rated.

http://s53.photobucket.com/albums/g6...rt%20Pictures/

So what do you guys think, any potential in this?