I'm guessing it's Gen1 or Gen2 Suzuki Gsxr750. Header is stamped "S255" midpipe is stamped "S790". I can send pics, measure header diameters, CTC of headers, whatever. It's complete, (minus springs), no dents. I figure someone needs this as full systems for early sport bikes are getting tough to come by. $75 shipped CONUS I'm not looking to make any $ on this just help someone out. If there's no interest I will use the mid-pipe on another project and just toss the rest. It's been in my pile of crap for 15 years.