Well, I went to visit the guys down at SVC today to have some Deaver +2s and their bump stop kit installed. The rear end of the truck has always bothered me since day 1 - very skittish and unpredictable at times. I learned about the Deavers from this forum early on. I knew it was a mod that I had to do and that day was today. On my bumper to bumper drive home I could immediately notice the difference. It is so good in fact, that now the front feels 'meh' in comparison I definitely need more seat time but so far, it is as others have stated, night and day. The OEM leaf springs are very scrawny compared to the Deaver units. I think Ford cheaped out or wanted to save weight and basically 'over sprung' the rear springs, at least that is how it felt and that is how they look. It took the guys at SVC about 4 hours to do the work as I sat on my lazy ass on their couch So, I have nothing done suspension other that the rear springs and bump kit. I didn't want to do collars yet as I want to see how the truck behaves as it is first to see which direction I want to go. I'll chime in later with updates as I have more hours with them.