Other possible options:
Have a key made by a locksmith to fit the existing ignition switch ---
Click here >
www.kzrider.com/forum/4-electrical/41487...e-code-number#414874
Replace the ignition switch with a new unit that includes keys ---
Click here >
www.z1enterprises.com/ItemDetails.aspx?i...lock&item=EM40-80610
Key blanks are part number 27008-1103, which are reportedly still available from Kawasaki dealers, that fit 266 different Kawasaki models. (If needed, there's a link in my signature for help with navigating kawasaki.com).
Obtain a used ignition switch that includes keys ---
Check ebay listings for a used ignition switch with keys;
Start a thread in the "Wanted" section of KZrider's Classifieds forum.
According to kwasaki.com, the same ignition switch part number 27005-5024 is used on the following models, and is still available at Kawasaki dealers.
KZ1000-P10 (Police 1000) (1991)
KZ1000-P11 (Police 1000) (1992)
KZ1000-P12 (Police 1000) (1993)
KZ1000-P13 (Police 1000) (1994)
KZ1000-P14 (Police 1000) (1995)
KZ1000-P15 (Police 1000) (1996)
KZ1000-P16 (Police 1000) (1997)
KZ1000-P17 (Police 1000) (1998)
KZ1000-P18 (Police 1000) (1999)
KZ1000-P19 (Police 1000) (2000)
KZ1000-P20 (Police 1000) (2001)
KZ1000-P21 (Police 1000) (2002)
KZ1000-P22 (Police 1000) (2003)
KZ1000-P24 (Police 1000) (2005)
KZ550-A3 (1982)
KZ550-A4 (1983)
KZ550-C3 (LTD) (1982)
KZ550-C4 (LTD) (1983)
KZ550-F1 (Spectre) (1983)
KZ550-F2 (LTD Shaft) (1984)
KZ550-M1 (LTD Shaft) (1983)
KZ650-H1 (CSR) (1981)
KZ650-H2 (CSR) (1982)
KZ650-H3 (CSR) (1983)
KZ700-A1 (1984)
KZ750-E1 (1980)
KZ750-E2 (1981)
KZ750-E3 (1982)
KZ750-F1 (LTD Shaft) (1983)
KZ750-H1 (LTD) (1980)
KZ750-H2 (LTD) (1981)
KZ750-H3 (LTD) (1982)
KZ750-H4 (LTD) (1983)
KZ750-L3 (1983)
KZ750-M1 (CSR Twin) (1982)
KZ750-N1 (Spectre) (1982)
KZ750-N2 (Spectre) (1983)
KZ750-R1 (GPz) (1982)
Good Fortune!