OP, find some guys on here local to you. Check their feedbacks on here, Ask around. Find a good reputable forum member, or as another member suggested, go to a proven consultant. There are people in this field, that will azz **** you if they know you do not know what you are doing. And you will have spent your money, and have a POS to show for it. A crappy installer can butcher your car in short order dude ....and leave you with a worthless ride, and a monumental POS system ...It is a sad truth in this field .....don't let yourself fall prey to it.