2-ways alarm and Auto Start Alarm is two different system. Some 2-ways alarm is bundled with Auto Start Feature leh...Auto Start Alarm is suitable for any Automatic Transmission Car.
Depend on either you want to take the i-Key feature out from your latio or not. If install 2-ways alarm, your i-key feature is disabled and you will notified by your remote-control if someone trying to break into your car ONLY IF the distance between your car and you within it's ALLOWED frequency range.
If you want to keep your i-key feature, you can purchase those Add-On alarm with Auto Start Feature lor. I know Viper Alarm (and many others brand you can search from this forum) got one model suitable for this.