Just came across this site and would like to ask some opinions on suspension for a 76 Sub, as this is the first GM 4x4 I've owned. It may be a little late as I have parts on order, but maybe some input on the setup as I haven't started installation yet. I plan on: TC 3" EZ Ride front springs, 2 1/2" shackle flip rear, drop sway bar disconnect, all rubber replaced with Energy Suspension pieces, Rancho RS9000X shocks. I will probably run 255/85 16 tires (33x10.5). This will be a multipurpose vehicle, but I would like to optimize for rutted/bumpy Idaho desert roads that I like to drive fairly fast. Due to the size of this behemoth, I don't plan on doing any serious rock crawling, but do plan on some semi-serious back woods use which mostly entails washout/ravine crossing. Since I will be changing the spring perch on the rear, should I go with 56" springs and maybe remove the overload? I'm considering this with a Firestone air helper for when I'm towing or have the family and gear in the rig. Sound like I'm going right direction? Any non-rock crawlers out there using their truck like this?