LS430 - Retrofit reversing sensors

[Antharro]

Is it possible to retrofit reversing sensors? Having had them on my Camry, I would like them on the LS. Lexus have told me I cannot take the reversing sensors from a 2002 and retrofit them as apparently the computer won't know how to talk to them. They have said they can supply me with sensors compatible with the car and fit them for £450. I can't see why they would change the sensors so much between the 2001 model year and the 2002 model year that they wouldn't work. And I would assume that sensors were a factory option for my car, so presumably some of the wiring is already in place, it just needs the sensors and some kind of control module to be fitted.

I know I can go for aftermarket sensors but I've never been impressed with them; whereas the ones on the Camry are superb, so I assume the factory LS ones would be equally as good.