The body of the radio is 1 5/8" tall. The bracket is shaped such that it hugs the body very tightly when fully engaged past the mounting holes. The arms of the bracket would then extend past the body and could be trimmed and new holes drilled. There are vent slots on the bottom as can be seen in the above pictures but they do not extend very far onto the bottom of the radio. I believe as long as the sides were not blocked there would be adequate ventilation so Velcro to the carpet will likely be an option but having a slight air gap would be best. Perhaps @Fuzzybr or others can supply more info about their installations. My radio is not mounted in the vehicle as of yet as I am waiting for antenna and mounts to arrive next week.