You can usually tell. I just did the SRB's at the control arm. And after 155k in the north they were pretty well trashed. And visually it was obvious. The OEM stuff is better then the best aftermarket stuff. But the factory SRB's that bolt to the arm are pretty much non existent. I went with the blue Moogs since I had both those and the other commonly available black urethane type on hand to compare them too. The Moogs used a thicker sleeve vs the generic Mevotech type and black urethane type material looked to be too soft compared to stock rubber. Plus the Moogs where much closer to the factory bushing shape. My front strut rod to frame bushing seem to be fine. So for the moment I'm going to leave those alone. Other than the lower shock to control arm bolts everything came apart just fine.
A loose bolt will definatatly cause plenty of noise. Something to keep in mind is that a lot of the factory suspension nuts are of the locking type with a nylon insert. And they are not meant to be reused. But of course everyone does. And most of the time things are fine.
But if you hear clunking and reused the old lock nuts it might not be a bad idea to put the car on a lift and recheck the bolt torque. FWIW some of the suspension bolts and nuts are meant to be torqued on a drive on type lift with the weight of the car on them. EG the lower shock bolt. And I believe the lower ball joint.
How are those moog srb's treating you to this day? Im ready to overhaul as many bushings as i can afford. An ofcourse i cant find OEM strut to lca bushings. Im freaking out and dont know what to do... I have the following parts ready for install.
Energy suspension differential mount bushings, ES rear kuckle spindle position, ES cobra IRS bushing kit, ES rear sway link bushings, SCP rear upper inner Control Arm bushings,SCP shock bump stops, 2 new lower control arms, and lastly the SRBs from ford. K member to strut only