Does anybody here have M20 mounted on their coupe? Who did you buy the jammer from? How difficult was the installation? Do you have the transmitters installed behind the chrome grill or the air intakes in the bumper? Are they waterproof? Do you have M20 with two transmitters in the front or M40 with the additional two in the back? Would it interfere with my V1? Anything else I should know about it? Thanks a lot!