I am about to replace the suspension in my 74 K5. It is shot and feels like I'm driving a tank. The routes I have are to run with the 4" Tuff Country Leafs all around. That is the easiest, cheapest way for me to go. Now a little more cash is the 4" Tuff Countries in the front and do the ORD Shackle flip in the rear. The problem with that is I have to find new rear leafs, cause my stockers are bent. Also, I'll have to deal with the pinion angle. Can anyone here give me any helpful info on the pro's and cons of each route? I really appreciate it.