See a pic of mine on the soil ripper thread.
They bent the 1/4" bar stock that I bought at TSC after first cutting it a little bit, then backfilled with weld at the bends. You did yours in individual lengths and welded them together.
The materials (incl. a 3rd bar to attach to the soil ripper bar for lifting it and a 2nd top link to go between the top of the drawbar and this 3rd bar pair) was $75. JD wanted $290 for an adaptor, and I likely would not have gotten my drawbar that I can use for other stuff. I've already got my 1 1/2" ball for towing my Gravely cart mounted on it. Couldn't leave it mounted on my to/fro drawbar on the tractor for when I needed to pull my Troy Bilt shredder with a std pin hitch. On this new drawbar, I can, even with the soil ripper attached to it.
Ralph