I had problems installing Bilsteins on the front. Of course,I put them up thru the bottom,fastened the top.....then had a heck of a time getting them compressed so that I could fasten the bottom to the lower control arm. Actually had to use a scissors jack on the shock to compress it up to the control arm. Then,one of the nut plates stripped when the bolt was almost tight. Had to nut/bolt it,which wasn't easy.
The shocks absorb speedbump style bumps well. But,if there is a pothole....and the shock has to extend then compress?? *BANG*
I'm not sure what's on the back,but no more Bilsteins or me.
Maybe if the roads are ok,Bilsteins are good. But these roads in Upstate NY are in rough shape.
Just about all of my other cars have KYB's. They ride and handle nicely. Some have many miles on them. That's what I should have put on the front of my GN.
Recently I put new body cushions in. We'll see if it rides any better once it's off the stands.