I bought a 250cc pro street outlaw chopper online at sunny sports. I have been researching this bike for two years! I called sunny sports up and asked them if it was a full sized chopper and would I fit on it? They assured me it would! Well.... not really! I need a swingarm extension but can't find one that will fits! It's a steel tube, pro street hardtail, single downtube 2" backbone stretch with a 41 degree rake. Any ideas?