frame minibike mini bike help

Does anyone know what mini bike this is? My dad's friend said he built it, but I'm not sure he's telling the truth.

[I]I have a army green version of the baja warrior that i am turning into a quick little street cruiser. It has a mildly built 212cc with a tav. I can tell that frame is bending under torque and the i weigh 215lbs so thats more stress. I want to know where are good places to put gussets and...

Alright, heres my problem. I've got a mini bike I think might be a Rupp. i got it for $200 so I figured i got a good deal. I want to do a few things to it, but its pretty much impossible for me to find wheels and tires for it that actually work. The bike itself is pretty much just rigged...