There may be an option for you to add a hitch to your 2020 Gulf Stream Vintage Cruiser travel trailer, but there are no bumper-mounted hitches that fit a 1-1/2" x 4" bumper, so the only thing you may be able to use is a frame-mounted hitch.
The best option, which can work so long as your trailer has a Box frame, C-Channel frame, or I-Beam frame that measures between 18" and 51" is the Curt Adjustable Trailer Hitch Receiver - 2" Drop # C13701.
This would give you the best option to have... view full answer...