So I did , you answered my question.I looked around on the Google search. (after making the second set) These look like the ones Mark sells @65swb45 I think they are stronger than the ones others are selling due to the fact the angles of the mounting points, both at about a 45 deg angle so they keep from bending back. Others are at a 90 deg down and allows the bottom skid to flex upwards without support. With the time I had wrapped up in them I would have been better off buying them. I will know better next time! I did add the shock mount in the proper position to optimize flex and less stress on the shock bushing.
Edit: you said shackle skids, I am not sure I answered your question????
I especially like the low shock hanger, nice work!