Sure it is....they're both trucks pretty much the same motor just a little bit of weight difference. Ones old, ones new.
Just the 4x4 compared to a 2wd is not the same.
Plus "a little bit of weight" goes a long way.
Additionally the 5.3 and 5.4 would be nearly the same motor.
Now add in different gears and we aren't even in the same book any more...
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