1978 MACK U - SUSPENSION:MULTIPLE AXLE 1978 MACK U - SERVICE BRAKES, AIR:ANTILOCK:INTERCONNECTING ASSEMBLY(WIRING) 1978 MACK U - STEERING:WHEEL AND HANDLE BAR 1978 MACK U - SUSPENSION:MULTIPLE AXLE 1978 MACK U - ENGINE AND ENGINE COOLING:ENGINE