I purchased Rocky Road Outfitters YJ spring conversion for my 66 CJ5 V6. They suggested used springs being just as good and much cheaper. So off to junk yard we go. The YJ not boxed in by other Jeeps had the rear axle already gone and everything else looked good -springs straight and bolts not to rusty. Half way through the job we noticed the springs were definitely taller than the others but decided to carry on. Confirmed last night they are Rubicon Express Super HD 4.5” lift. Very expensive springs. “ the best money can buy” according to RE. So I’m not opposed to lifting my jeep. It looks good, Trail riding will improve, tires will clear and it is not a daily driver. My questions are - What are the downfalls of 4.5” lift on an old jeep? What extra work/parts will I need? Rear spring says “RE1455” Front springs. Fronts are lower?