Installation didn't go bad. I used a jack to loosen the bottom mounting bolts. influence on others. (After WD-40 treatment). I had to lift the car off the leaf spring attachment point to allow enough clearance to insert through the mounting brackets. Just installed so not sure about durability. Going from stock shocks, which both killed us, to brand new upgraded coilovers should be a sure win. Especially for the price. My car is a 4x4, but I don't drive it off-road. It's set up like a camper, so there's constant weight on the rear. Just around the block did my solo handling seem better and a little softer on the bumps. Again, for the price, it couldn't be better.