Thanks guys. I'm ready to weld on the spring perches but am having trouble with the pinion angle so it's just sitting there til this weekend when I have time to spend under the truck.
With the axle on top of the springs, I've got about 3-4" to the bump stop with truck sitting on jack stands. I know this is a poor way to measure it but it is what it is at present. I'll post some pics when this part is complete and I can move the truck to the shop bays to work on it.