Yes,
The Z1 will switch to rear camera when shifting into reverse (Be sure to have your reverse wire of the Z1 installed correctly).
Some cameras are regular image, some are reverse image and some give you the choice of configuring to regular or reverse image. Which is what I recently bought.
Be sure to buy a camera with the better CCD type lense, and not the cheaper CMOS type. A 1/3" CCD lens is better than 1/4" CCD.
Be sure to get 110 degree or better viewing angle. 120 degree is ideal.
Look for 380 lines of resolution or better.
Finally, look for a camera with night vision, these will have LEDs around the lens. 10 LEDs or more will suffice. The more the better.
Also, some cameras have microphones built-in for outside sound, I'm not sure how or if this feature would integrate with the Z1 but I just wanted to mention it so that you know what all is available out there.
I hope this information helps you.