if you are any good at wiring, they are not too hard to install. I did my own alarm on an 00 Sport, and it took a couple hours, but just for the keyless entry, I can't see it being too difficult. I can't remember the brand of the one I got, but I got it at Circuit City, and its a brand they were no longer selling, so I only paid like 25 bucks for the alarm and siren, keyless entry and all that jazz.