I still have my 1975 Z1B 900, bought brand new in August of 1974. Yes it is pretty fast, handles like crap, But it always runs perfect and is very reliable, 27,000 miles, Does not Leak a Drop. but my 1985 Yamaha RZ500 smokes it,big time
I was fortunate to have survived my Z1 days but I learned riding survival skills on it. When my CFO approved the purchase of a bike in 2008 I had no problem buying a Harley even though I had made fun of them for years. I wanted a more sedate ride in these latter years.
I still have my ‘73 Z1. Engine #000189, frame #000188.