i too used the bolts in the kit and find that my rear also has a bad clunk i will order new bolts like the review before me did. but construction wise better than upr.
The overall construction of the control arms is very good. However the mount hardware that comes with them is a safety concern for me. The stock fox body control arm bolts are m12x1.75x110 and m12x1.75x90 and are grade 10.9. The hardware that comes with this kit is a grade of 8.8, and are not a close tolerance fit like they should be. They don't tell you that when looking at the ad. If like me, my factory bolts were absolutely destroyed from corrosion. I installed the control arms and new hardware, only to find that now in-between shifts, I get a clunking. I ended up ordering the correct size bolts at a local bolt/nut distributor and plan on installing the correct hardware once they arrive. For the money the arms are worth it. But throwing inferior and incorrect hardware I think is a safety concern. Why even include the hardware if it's not the correct grade/tensile strength? FACTORY is 10.9, not 8.8. This needs to be fixed.
It looks very good and sturdy, installation was a breeze with no issues and they look great. However, they squeak horribly over any little bump, greased it a couple of times to double check. Maybe its the bushings it comes with, I can't figure it out