Has anyone installed remote starter on GX-470? How is it?

And the dealer is telling I should consider the Remote Passive Alarm, which will upgrade the factory installed alarm with automatic starter disabler. Can I just have the automatic starter disabler remote control only without upgrading the alarm?

Thanks.
Alien99

[Have you tried these guys?

luxurymotorworks dot com?

http://www.luxurymotorworks.com/sense_o_shock_alarm.php

motion sensors are a waste of time unless you own a convertable
where proximety sesnros as they are known as come in handy