2006 PETERBILT 379 WITH A CATERPILLAR C13 DIESEL ENGINE , 445 HP , 13 SPD EATON-FULLER TRANSMISSION , 12 000 LBS FRONT AXLE , 40 000 LBS DANA SPICER REAR AXLES , 11R22.5 TIRES AT THE FRONT AND THE BACK , ALL ALUMINIUM WHEELS , DISK BRAKES AND A PROHEAT