I am looking to lower my ride height in the front end of my 66. I thnk I am going to put the pst rubber bushing super front end kit in and am thnking I will put a set of 2inch drop springs in along with new shocks in the front when I do. Will this be o.k.? I have put new rubber bushings in the lower rear control arms when I boxed them in a month or so ago. Figured I would stay with the stock springs in the rear. Should I also replace the upper rear control arms or just put in new bushings. I am mainly gonna cruise around town and take it to the drags in the summer.