So I've reached 156k miles on my HHR and it's time for a front-end suspension upgrade. On the highway about 60 mph I get this fast knocking sound when I let-off the gas. I suspect it's my LF shock. Clunks, rattles and the like. Here's my cart so far, am I missing anything? Will I need camber bolt kit with lowering springs?

 

I never needed camber bolts in Oldblue, lowered 1 3/4 up front make sure to clean off any rust on the spring plates, wire brush them and paint them, be sure to torque the strut bolts at ride height, with the car on jack stands use a floor jack to raise the LCA’s up, then torque to 85 ft lbs

 

I'm pretty happy with those KYB struts on my 2011 LS. It got the "loaded" assemblies. Also rear shocks. I suspect the springs are a little higher rate. No difference in ride height noticed.

 

I’ve had KYB struts and shocks on both Oldblue and the BlackSwan over the last 14 years. Excellent ride , long life. No bottoming out with the 2” lowering springs from Canuck Motorsport