Just wondering for those experienced in building and specs etc, is there any similarity between the two?? A guy I was talking to told me the swingarms and the forks are the same etc. Im not sure how true this is etc. The main reason I am asking is I am wondering if the rear shock from a first Gen busa will swap into my bike ( 96 gsxr 1100). The rear is sagging a bit now, its not too bad but definitely no two up riding. Penske sells a rear shock for my bike as well as the Busa. They rate both units at 7.00" in length howver the Busa has a much higher spring rate. Approximatly 100lbs more. I have attached a picture as reference to the shock that is mounted on my bike currently. Any help would be appreciated.