artic fox 811 on 2005 dodge ram 2500 diesel short bed??

Some of the trucks are coming with 5th wheel plugs in the same place a TC plug goes. You can probably order that. You should check on what they charge and possibly use a different shop for the tiedown mounts. They will likely subcontract it out anyway.

I don't know about the Aisin long term, but I think it changes other options like gearing. Someone here will give you an answer shortly.