I have a 1974 RD350 that, besides the bars, was bone stock when I got it 10 years ago. It had 4200 miles on it when I got it. I hated the stock pipes so the first thing I did was get a set of DG pipes and start down the modification rabbit hole. After many late night phone conversations with the late, great Dave Freist, I was hooked on these wonderful machines and looked forward to tinkering on mine some more.