My friend has a 2005 Yukon XL that he uses daily for hauling and towing. His Auto height ride is long gone and it rides terrible. I was telling him to eliminate the autoride with shocks and struts. He went to the dealer who wanted about $2500 to replace everything! What is a good solution from him? It is a 4x4 if that makes a difference. He is not looking to lift it or drop it.