If I can get my hands on a welder I may weld up my own kart frame. Too bad I can't find one like my Dad bought for my brother and I when we were kids. Little Honda engine only put out 5.5HP but it was enough to get his 200+ pounds up and flying when he did his little safety check on it...we ended up with a throttle limiter
All I ever wanted was an honest weeks pay for an honest days work.