The new Tundra TRD Pro trim has only the higher horsepower engine as standard, but the auxillary battery pack for the electric motor fills up the entire area beneath the rear seat. Toyota elected to stay with the old school battery pack instead of the new, smaller lithium ion batteries. That engine has the electric motor located between the engine and transmission and will not be available until Spring 2022; therefore, TRD Pro will also be delayed until Spring.