There are a few alarm companies out there. The stand alone one was Audiovox, and you would have had to unlock the door, then remote start. Not worth the money, plus you would have two remotes, the Remote starter, AND the toyota remote. Too much fuss. If I was to install remote start, I would just install a new alarm. They start about $350 for good ones. Plus who knows how much install fee will be. I've heard of Vipers, I hear them going off a lot too. LOL. They are 6 tone alarms. They are made by a company called DEI. Good luck on your search...
- Manuel