Clutch
<---Pass
With it lifted I was running CS019R packs with the D6XL extra leaf, which are essentially CS020R heavy springs (4 main full length, 3 progressive). I have a WilderNest on my truck and run shackles that are 5.5" long (I think, they are about an inch longer than stock, so give about 1/2" in lift). This was basically flat fully loaded with 1.5" ball joint spacers and 25mm torsion bars not cranked.
When I lowered it I took out the spacers and cranked in enough torsion bar preload to compensate for the winch and bull bar, which wasn't much. I removed the D6XL leaf from the rears (3 main, 3 progressive) and left the longer shackles. This is just about perfect with the WilderNest and typical load. When I take the 'Nest off it is obviously stink bug and rides very harsh. I threw in a few tube sand bags and it rides better but still very stiff. I need to get my camper back on but my truck was hit in the side so it needs to go in for a little body work, which will require the shop to remove the bed and I thought I'd be nice to them.
So short answer is mediums with a slightly longer than stock shackle seem to be just about right in a stockish truck used purposefully. They aren't too soft it doesn't seem to me. With an empty bed mediums with stock shackles seem like they would be good match with a stiffer stock height up to maybe about an inch of front lift. Slightly longer shackles (like I assume ARB makes, I'm using Marlin shackles) are enough to compensate for the FlipPac/'Nest.
I pulled the AAL and one of the overloads Friday....the AAL is going back in today...a little too soft. Rides great unloaded, useless other-wise. Two MX gear bags, moto trailer with two bikes, and a passenger had it banging off the bump stops.