I want to put a 2"-3" lift in my '66, I like the Duff system but would like some feed back from people who have tried different kits. I use my truck as a daily driver and on gravel logging roads quite a bit and find it 'floating' (not in a good way) off the road if there is any washboard. Also what are the advantages of a dual shock system? Any advice would be welcome. Thanks. >-