A girl I work with had an aftermarket exhaust put on her new 600. She gave me the leftovers. I put the tailpipe from her 600 on my 91 this weekend. What a difference. I didn't know my pipe was partially crushed either. It fit like a glove and only took me about 20 minutes to install and weld up. I could tell a big difference immediately. I can't wait until I can get the rest of the exhaust done.