A talk with the local parts guy confirmed that V8 PF with a heavier tare weight of 2313 kgs is supplied with heavier rear springs, part no: 55020-ZS60B as opposed to part no: 55020-EA501. Somewhere I've read that the OffRoad PF has a slightly heavier rear spring and different part number than the LE /SE PF's as well, but didn't get that number. I've never checked this out but have also read that the Armada rear spring is also a direct drop in replacement for the PF spring but slightly longer (taller).
None of these may mean anything to the average driver but might give another option to guys that haul trailers or boats.
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