sides, 16" H sides, 22" H tailgate, 35,000 PSI yield high-strength stainless steel construction & floor, heavy duty front bulkhead with integral 12" tapered cab shield & tapered laser cut window, internal dirt shedding top rails & tailgate, western-style under structure with 10 gauge long-members, single-lever release, quick drop ta .. This 2015 F-550 crew cab features the 6.7L Powerstroke engine with 300hp and 660 lb.-ft. of torque and the Torqshift® 6-speed Selectshift® automatic transmission is engineered for high-torque performance and dependability