2005 then just get him a new car :) with remote starter from the factory :D. Hey,couldn't hurt to try, us 'good guys' gotta stick together too, ya know ............
Seriously though, most of the Installation places around here will sell you a Gift Certificate for the Alarm & Installation. Yes they may be more expensive than the ones you can get from the guy off the street, but whomever is doing the installation 'should' have the experience to know a good system & stand behind it. Some vehicles are a real PIA, and not really worthwhile, Voids Warranty, etc,etc. Best to go to a 'reputable' installation shop and ask their experience on the particular vehicle. I'd recommend even checking with the Manufacturers Dealer so there are no 'surprises' down the road.