according to Crutchfield. I was told that Z32s do not have enough depth to allow installation of the higher end single DIN stereos. I guess the double DIN stereos are shorter.
The X3600 costs less on other sites than Crutchfield. My main reason for choosing it is the larger physical buttons, even if it has a smaller screen. I just wish it had 4V RCA output like the x5600.