How is the heat output on the FTM-400xdr? Can I mount it in a little enclosed area behind my center console? There are a few little air vents cut in it but by no means is there a lot of airflow. It's in a Toyota Tacoma, the little trim panel at the back pops off to expose the built-in power inverter and the space above would fit the radio perfectly. Or does the heat output really require mounting where there's more airflow like under the seat or under the dash?