Guys
I'm gradually working my way through the listings for Kawasaki Police bikes (KZ 1000 P etc) to try and differentiate between models.
I'm trying to use factory designation where possible and have identified 6 model variations for 1000cc bikes (Z1-P and KZ 900 are another chore to come).
Spoke wheels, windscreen & regular mudguard = KZ 1000 Police (A1 & A2 for brake caliper position)
Mag wheels, windscreen & valenced mudguard = KZ 1000 C1/C2/C3 Police (C1 has different side panels to C2/3)
Mag wheels, fairing with mirrors on fairing = 1981 KZ 1000 C4 Police
Mag wheels, fairing with mirrors on handlebars = KZ 1000 P (P1, P2 etc is probably a step too far)
http://www.kz1000p.com/model-info-1.html
Please bear with me, there are a few hundred.