Tony...... between the X and Z there is SFA difference, just to name a few.... larger foot stand base - spring loaded gear selector tip - decals - front sprocket cover.
In my opinion Suzuki just tarted the X and sold them as a Z
This bike has been looked after and has low K's so I can't see why it won't fetch $2500-00 easy
Leith - luke - Michael - stop looking and buy it