I've got a 81 750 C as well. It had been sitting in garage, had tags from 91.Paid $500 for mine,did a tuneup,replaced battery,cleaned tank and carbs its been running great since I got it in 05.They are great riding bikes and very dependable.Re: the exhaust,I reasently got a stock 4into4 exhaust off e-bay.Anyway good luck with the bike.Here's a pic of mine.
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