I purchased my gpz last year, and I have been having a blast. My ignition box went last fall....$500.00 later I had my bike going. I have 4 into 1 exhaust (vance&hines), with a dyno-jet kit. Goes like the wind. I have people come up to me and ask how old it is, and are surprised to hear that it is 22yrs old. It only has 30,000 km.