Stan, thanks for your input...

I'm sorry if my previous post wasn't clear. I am having a 4 sensor system installed. All components are manufactured by Rostra. My Southeast Toyota dealer will provide the installation labor and the Rostra Park Pilot 'base kit' (Toyota P/N 00016-00034). The four appropriately colored sensors (also Rostra) will come from a Gulf States Toyota dealer (2 x Toyota P/N 00012-0073A-71). My dealer will provide the normal ParkPilot warranty support (36 mos).

I have confirmed with Rostra that 'base kit' P/N 00016-00034 and sensors (P/N 00012-0073A-71) are compatible. Each P/N 00012-0073A-71 supplies 2 sensors, so 2 of this P/N are required to complete the installation.

The intent of my previous post was to make folk aware that 'official' ParkPilot sensors are available in many colors, not just the colors available from their local Toyota dealer.