Well, my brother has an '03 2500 cummings quad door long bed 4x4 and I have an '05 F250 PSD 4 door long bed 4x4.
He has, muffler delete pipe, a quadzilla turned up all the way, 50/50 water/methonal injection and running LT285/70R17 Open Country tires.
I have stock engine 6.0, muffler delete...