I am interested in buying a remote start for my 2006 CTD. What brands are out there? Is a factory installed system as good as an aftermarket and will it work with a manual transmission? I would like some opinions on what brand I should buy. My truck is a 2006 3500 6speed. I have the key that is all inclusive, with the remote entry and what not. Could this be utilized or will I need to get new keys? Finally how hard would the install be? Thanks in advance for opinions, ideas and suggestions.