I did the single row cam chain on my '81 five years ago and it was easy. I called Hucky's and he sold me a kit with everything I needed. The only part that was frustrating was getting the master link installed but I didn't know about this forum then and had to figure out myself to come at the back of the chain with the link super glued to a piece of stiff wire. If I had asked ADV back then I would have had a thread of helpful comments. I did not change cams.