LegacyCTransport

I am an owner operator truck driver full time so I have plenty of HDT knowledge but I thought since folks here do this alot I would ask. What are the issues with trying to use stock commercial 5th wheel hitch instead of mounting a new 5th wheel farther back like a hauler set up? I dont want to modify my truck since I haul 53ft dry van for making a living. Thanks in advance for any help.