The only other parts from the van you need are the pivot bolts at the end of the control arm where it bolts to the frame bracket. As far as 1/2 ton or 3/4 ton arm being better than one another I really believe it makes no difference which one you get. On being a bolt in you will have to drill out your trucks frame bracket for the pivot bolt of the lower control arm because it's larger and then redrilling for the bolt holes for the strut rods in the van control arms. Other than that it is mostly a bolt in.