2006 Kenworth W-900B daycab:  Cat C-15 550HP, 10 speed transmissions (18 series), air ride, Brakesaver, 3.91 rears, 204" wheelbase, Dual exh with dual stainless breathers, alum wheels, 46,000 rears, very clean truck..overhaul by Cat with OPT warranty included. Please call 1-800-280-0600 for more info on this unit!