Sway bar adapter

I recently bought a sway bar from PST to install on my '65 Barracuda. My car did not have one originally so I am having to make it fit. I am not all that impressed with the brackets supplied to attach it to the frame. I am getting ready to pay someone to weld some homemade brackets to the k-frame for me but I was doing a little more research & found these sway bar adapters (circled in picture) mentioned in a couple of threads on the forum & in an article in Mopar Muscle magazine. I have found an Energy Suspension kit that includes these but it comes with bushings & brackets also & I do not need all of that stuff since it came with my new bar. Are these still available & can they be bought separately? Thanks for the time.

sway bar adapter.jpg