....my very first bike was a brand-new blue '75 Z-1B...I was a 19 year-old USAF Airman back then...now I wish that still had it...sold it to buy a new KZ900 LTD...sold that when I got shipped to a remote sight in Alaska for 18 months...I thought: I could always get another one...never did...when I separated from the USAF, I went home to Hawai'i and found a used Z-1B just like my first bike, but it was kinda ratty, but all the parts were there...another dude showed up at the sellers and we had a blind bidding war...when the envelopes were opened, he beat me by $25...he had bought it for $400!...I should've never sold my first bike...its the four cylinder that started it all for the modern Kawasaki 4-stroke superbikes...