Since I have a stock 275HP 02 F350 PSD with 50K on it you know my answer. Fortunately mine has the 6spd manual tranny as the 4R100 is the weak link so it needs to be
bullet proofed.. You do not need to add and exhaust brake as the
EBPV valve in the turbo of the 7.3 can be tricked into being a surprisingly good exhaust brake, but you also have to trick the torque into staying locked up regardless of which exhaust brake you have. I often gross over 26K with a equipment trailer where I can adjust the pin weight. More than enough truck to pull a 36' 5er and if you mount a good size generator on the back bumper you will not even need to add air springs to your 350. 5ers do not need 20% tongue weight... they do that so they can put cheaper axles/tires under them. Find a rig with 7K axles and big 16" tires and load it heavy on the rear and be happy.:B
