Ted
I ended up ordering brand new springs de-arched 3 inches in the rear for my 49 Suburban (same chassis) because I had a lot of broken leafs in my pack. I had Eaton do 4 springs for a hefty 900 bucks, but it was worth it. They also added teflon buttons to the pack. For the front, I had Sid Drapal stretch and drop my axle 4 inches and started with a stock spring height up front. Worse case, if I want it lower, I can dearch the fronts a bit.
For steering, I had to heat and bend the steering arms down and now run the arm under the leafs. As for the steering arm in relation to the pitman, I bent it to keep it as level as possible (to Avoid bump steer)
While I was at it, I put the newer style tie rod ends on the pitman arm linkage and steering arm linkage.
http://gallery.mac.com/patrick.plummer#100287/DSCN2649&bgcolor=blackhttp://gallery.mac.com/patrick.plummer#100287/DSCN2651&bgcolor=blackhttp://gallery.mac.com/patrick.plummer#100287/DSCN2661&bgcolor=blackFinal Stance
http://gallery.mac.com/patrick.plummer#100501/IMG_2437&bgcolor=black