We have been working with Mike, the owner of the Duramax Store, for years. When we met him years ago, his truck was one of the first solid axle Duramax trucks we had ever seen. We swapped out his ORU leaf spring setup for 4 link and King Coil-overs. On this round, Mike wanted to update his "OLD and outdated" 4 link with our new modular shock towers and cross-member. There is nothing like doing a solid axle swap on the same truck for the 3rd time!