I need new lower bump stops for my lower springs and i was looking at the JKS adjustables on 4x4 group buy. Will those work? I need 2in front lowers and they go to that size. Also, on the RE 3.5in superflex, why do they only come with the rear brake line and not fronts? I am piecing togehter a RE 3.5 for half of what it is new and these are the 2 parts that I still need.