Prevost 20K hitch with only a 2" receiver. Looked everywhere and called Hitch Pro in Eugene, OR: highest 2" shank is rated at 17K lbs. 2.5" shanks go to 20K lbs.

Strange that Prevost would install a 2" receiver for a 20K hitch.

I'm planning to tow a 26' stacker, max load 19,800.

Any help would be greatly appreciated, thank you