It doesn't appear that you have much travel on the shocks.... If the coils bind when you hit a bump, then something has to give and it will be the bolts!!!! With the car at ride height, at least 40% of the shock rod should be exposed....

Aldan's, as with most of the street rod coilovers, have about 3" of travel...It's critical to have enough shock working area to keep from coil binding the springs.... IMO, 200 is way to much spring rate for the rear of an A sedan... If you could scale the car and get at least the total weight it would help.... Front and rear weights would be super to get the correct rate and height spring... Just guessing, I'd say about 110 to 130 pound springs would be correct.... By looking at the way your coilovers appear, someone bought to high of a rate spring, and has the adjustment ring all the way down to compensate for it....Almost appears that the coils are doing nothing cuz they're too stiff and all the suspension is just the shock itself.....