Peterbilt 579 Cab & 72 Sleeper Panel Kit for Exhaust with 1 Block Heater Hole & 18 Slotted Light Holes - Long Hood. Peterbilt 579 Cab & 72 Sleeper Panel Kit for Exhaust with 1 Block Heater Hole & 18 Slotted Light Holes - Long Hood TP-10142 PB.