Truck and SUV Steering Gear Fits 1980 to 1987 GM 2WD trucks and SUV's;Fits 1980 to 1991 4WD full size trucks and SUV's for crossover steering conversion;O.E. spool valves are completely dis-assembled, inspected, modified with proper T-bar, reassembled and tested for proper flow balance PSC Steering PSC Steering Truck and SUV Steering Gear - SG041M SG041M Steering Box