Could this work in you case? Using snot brick to build it vertically.
The only way I managed to get your angle and snap it correctly is like that.
I used stud.io with collision turned on to be sure it could work.
I hope this can help you.
I found another solution using bar and bar with clip. This one is much more modulable but maybe less ...
I could suggest looking at suspension in RM8's Land Cruiser (FJ40) model. Although all description is in Russian that webpage contains sufficient number of pictures, which are self-explanatory. This model has even got free instructions.
From what I see, both yours and RM8 model's suspension are 11L wide so it could be adapted or pose as an inspiration to ...