Complex sentence: The Quad Cab was only offered with a 5-speed automatic transmission, a 48RE borrowed from the Ram Heavy Duty with Cummins turbo diesel the 48RE was rated to handle up to 700ft lbs of torque.
Split into simpler sentences: The Quad Cab was only offered with a 5-speed automatic transmission, a 48RE borrowed from the Ram Heavy Duty with Cummins turbo diesel. The 48RE was rated to handle up to 700ft lbs of torque.