Thanks Larry. You say Air Shocks you get laughed at. I will keep the stock springs and upgrade the bushings. As far as a spool I have a 7.5" 10 bolt and they do not make spools for this axle. So I would need to replace axle. Plus I plan on some street driving, I need to find a cheep and easy way to go to 4.10's Yes I know those two do not go together.