Usd from a 91 gsxr M, but the discs are toast, looks like they have been attacked with a grinding disc. nothing else apart from slingshot discs seems to fit, but sticking with it as everything else seems okay. 5.5 with a 180 on the back seems to fit okay, need to brace the frame a bit and was thinking of shifting the top shock mount, but not sure now. standard 550 tank and tail, will make the seat base.