I've searched through the fprum without much luck in trying to find out if I have ANC? Truck is a '22 Tradesman. It came with the laughable 5". I've since upgraded to the 8.4" and I am thinking of adding an amp and sub. I've looked under the front seat but couldn't find anything obvious for an ANC unit/plug. Any help in exactly what to look for or search for online would be appreciated. TIA.