I just purchased the qA1 coil overs How did you use the 9/16" bolts that came with the rcd brackets? I Ended up drilling out my brackets and using 3/4 to 1/2 bronze bushings so i could use 1/2" bolts that fit the bushing on the coil overs. I havn't installed them yet as I am still waiting for my springs to come in.
