I want to get my Viper 791XV installed but dont want to get butt raped by the audio shop with the modules Im gonna need. So Im hoping you guys can help me out and let me know what I need so I can get a good deal on them. Ive got an 05 with p/w and p/l. I have the alarm and r/s box, just dont know what bypass/modules I need. Lil help please?