i just installed the 20% stiffer bilstein shocks on my truck last thursday and friday nights(rear thurs. night, and front fri. night) huge differance over stock. it took me about 4 hrs to get the front driver side off(with the tire removed). i ended up rounding the top nut off and said f it and i cut it off with my sawzall. had the new one on it 15 minutes. driver side went straight for the saw and cut it off and had the new one on in about 10 minutes.