Made my own, cost about $39. 00 and didn't cut anything on my 01. 5 sport----bought the receiver from local r-v dealer and 3+ feet remnant of 3"x1/4" sq. tube from local steel dealer---made 2 mounting plates from 1/2" plate and fit to frame, 5/16" welds both sides, 2 - 3/4" drilled holes each, matching holes in matching plates welded to 3" sq. tube spreader, align, center, bolt-up and WALLAAH------took less than 3 hours and done.
P. S. I can't even get the ball under the hitch on my 28' TT where I store it, much get the trailer in or out of there , with the rear hitch!!!
Jerry