Man i've been doing some looking for full race systems for a 88-92 GSXR 1100 and am not having a whole lot of luck??? I'm just shopping right now to see whats out there but it seems like everyone has discontinued making pipes for these old bikes? I got a '91 750 that i plan on dropping my '91 1216cc drag race motor into (approx 180 RWHP) and I'm trying to find a real big diameter pipe and am having no luck finding ANY pipe let alone something that will flow good on this motor. D&D still makes them, and Yosh has some on their discontinuing and close out page, other than that i can find nothing. Anyone have any insight into who still makes pipes for these motors?????