For all that installed a new alarm, does the key fob like the Nissan one (not look, but function) Like does it unlock both doors at once, button for trunk???

 

Yes they do. The Autopage and Viper are the ones that I know of.

 

Yes, but can they roll down the windows also?

 

They can roll down window using unlock button, just like nissan key fob but I had a kill switch intalled to prevent windows from rolling down with alarm set because that is how the Z is getting broke into. They pry doorhandle and windows roll down, see the post "my car got broke into"