no, it should set it about right. I used lift shackels combined with custom diesels add a leaf pack and it set it level and didnt ruin the ride quality either. bigger springs will increase ride harshness. plus, it should be cheaper than doing the pro comps. also, you will need to look at replacing your front track bar with a an ajustable one. they dont make an adjustable one for the E99s. you will have to buy a regular one and drill out the hole in the ends to fit over the studs on our trucks. i havent changed my trac bar yet, but its driving ok.