Kustom Hawk K-band Dual Antenna Radar (CHP) Ebay
 

http://www.ebay.com/itm/NICE-CERTIFI...item337ce94a98

Not an actual radar unit used by CHP, but this exact model was used by the CHP in the early 90s to early 2000's(and possibly more recent). 1998-2000 Crown Victoria CHP Wiring Schematics do show this radar setup.

One of Michaels (mac88chp) photos for reference. 1990 Mustang.
http://images43.fotki.com/v1328/phot...ngLX004-vi.jpg

Multiple other units like this on ebay as well.