I have recently been looking into replacing my OEM hitch. I went to two different hitch garages and they both said it is not worth it. They could have each made a sale but both said if you are within capacity you are fine.
Now one of the garages does rv, trailer work, suspension and engine work. The other place does just trailer and suspension along with custom hitches and the manager/owner inspected my 04' 2500. He pointed out the ones that are weaker had bolts just along the frame and Chevy beefed them up by adding two more bolts closer to the receiver portion.
FWIW I am not well versed in trucks and pulling as I am fairly new myself.
