SS springs & sliders...

After re-reading and looking at that diagram I think I will actually buy a pair of rear hangers and have someone weld a plate to the lower edges that sticks outboard by 2 inches or so and forward by a few inches then find the sweet spot for the slider drill , tap and jamb nut the slider bracket to the plate then cut off the excess plate , maybe a reinforcing spacer/stiffener plate between the edges of the hanger bracket as well. I don't well but if I cut all the pieces I bet I can get someone to weld it all up pretty cheap for me .