Hello All, brand new to the forum, but a long time Chevy Truck enthusiast. My main project is a '74 Stepside that I've been rebuilding and hot rodding for a decade now. However, I recently picked up a 1999 Suburban K1500 LT for relatively cheap and I took it to get revived by my local shop after buying various replacement parts online at Summit and JCWhitney Thinking it would be easy and doing no research of my own, I followed the fitment suggestions of the above retailers and thus far I have purchased two different types of shock absorber to fit to the front suspension, but the mechanic is telling me neither will fit due to the diameter of the shock intersecting the other suspension components. Eventually I had to go with the Monroe Reflex Shoc mentioned in this post thread. The first two types were; Tuff Country TFY-69101 and then a Rancho RS9000XL™Adjustable Shock Absorber. I wanted to get some information on good shocks to upgrade the suspension and improve ride quality? I was also wondering if the mechanic was doing something wrong and why these shocks wouldn't fit? Is the retailers fitment information just wrong? Any info is appreciated. Thanks.