Complex sentence: Basically the same as the Mk 1 but for relocation of the two x 100 gallon fuel tanks stacked the rear of the cab, to saddle in the centre of the vehicle.
Split into simpler sentences: Basically the same as the Mk 1 but for relocation of the twin 100 gallon fuel tanks stacked the rear of the cab. These were moved to the saddle in the centre of the vehicle.