If you are having trouble finding a spot for rear speakers in your classic truck we have the answer! We designed and fabricate these inner cab corner 6x9 speaker panels for 67-72 Ford F100 Trucks. These brackets fit perfectly in the cab corners of your classic truck and screw in. You Must relocate you fuel tank to another place on the truck. These will NOT work with the gas tank behind the seat. You will receive 2 panels. One Right and One Left side panel!