Alarm question....
#1
#2
no not all D's are equipped with alarms(at least not in the sense of an anti-theft alarm), they do include a 'panic' alarm(flashes headlights and beeps horn for a period of time) which you can activate by pushing a button on the key fob, if your truck works with a key fob then it has this option built in.
#5
If you have the highline ctm then you should be able to have keyless entry. One feature that requires the highline ctm is the fog lights, so if you have them you should be good. I know my 99 only works with the remotes with the ram's head on them, and that the 01 & up work with the one without it. I believe the 2000s use the one with the ram's head, but since 2000 was a changeover year you should double check before buying.