i just picked up my 04 titan about 2 months ago and i decided to go with a better alarm, im thinking a clifford matrix 12.5x(non-remote start) or the matrix 50.5. I found them both online for pretty cheap, but every install place i talked has quoted nearly $350 for install. Is that normal??? They mentioned a by pass and interface module, all i know is that after finding the alarm for only $200, its now looking more like $600 after install?? Any vegas help???