I took off my HKS Carbon Ti exhaust from my GSX a few months back and never found time to bolt it back. I bought a home and moved, I lost all the hardware (gasket, bolts, nuts) that I need to put it back. Is there a place or vendor that I can buy the set from? Thanks in advance

Just measure the flanges and hole distances on the exhaust flanges and you should be able to get the exhaust gaskets at any parts store. Pretty much any gasket will work as long as they are the right size and your flanges are flat. As for the bolts, you don't save old reusable nuts and bolts? If not just go grab some at a hardware store. You're looking at maybe $15 max.