Not only bigger, but double diaphragm one at that.
On the cab, the 3/4 ton will have taller mounts...but it is just the rubber deal...ot the cab supports them selfs.
I thingk the master is differant too. I know for a fact one ton has a differant part number than a 1/2 ton...and pretty sure 3/4 ton is like the one ton deal.
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