There are three 126 models that I am interested in. The 300SEL, 420SEL, and 560SEL. I would like to get one and then lower it. From the research I have done it seems like the 560SELs have the self-leveling hydraulic suspension. I don't want that because it complicates and increases the expense of the lowering process. Do the 300 and 420SELs have the self-leveling suspension? Thanks!