Anyone has any experience on HZJ70/71 and the rear shock springs. I will put rear OME leaf for medium duty (given the fact that I don't drive with heavy loads most of the time). But thinking about the N68 as shocks recommended for this leaf and there are the N75 that is recommended with HD springs. Anyone has tried the Medium Leaf with the N75? any comments, how it drives or how it will drive? Thanks