Looks a fun project! I don't in any way want to bring a downer to it, but please do yourself a favour and get some new front wishbones made up. The problem is in this pic:



The entire weight of this corner of the car is being resisted only by the shank on the rosejoint in bending, a mode in which it was never intended to operate. By the looks of things its already bent.

Either move the bottom of the shock to act directly on the upright, or if thats not possible due to tyre clearance at least replace the joint with a proper housed sperical like this: