I am planning on making an off-road, type go kart but have my deesingn more like a road speedster instread of the big large ones with ovetr rails. I need it to be above the ground, with large suspension but im having trouble with the rear axel, i don't know were i can get something like one of those, also an engine. I don't have the slightest clue. The only thing I know is the frame, and suspension. I need any in formation. Thank you!