Backstory: I'm in the home stretch of swapping axles in from a First Gen Cummins truck (Dana 60 / 70 Combo with 3.54 gears).

Thanks for the advice on the Skyjacker 1.5" - 2.5" Softride Leaf Springs for the front. Now that I've got those installed and the front of the truck sitting on it's own weight, I've got the rear sitting on jackstands to level the truck and measure how much lift required to level it off.

It appears I'll need 4.75" of effective rear lift to make it sit level. My goal is to level it WITHOUT sacrificing ride quality.

The truck still has the OE rear springs and blocks between the axle & springs. I'm thinking If I go with the Skyjacker DR40S (4-6" rear lift springs). and perhaps front Hangar's from Jungle over on RCC, I can then fine tune the height with a custom spring shackle and perhaps even get rid of the factory lift block.

Once all that's done, I can get some measurements and figure out if or how much the driveshafts need to be modified to bolt them up.

I used to have lifted trucks. My last one was a 2005 diesel lifted with a 6" Skyjacker set up with quad shocks up front. Go with as much leaf spring you can use. Blocks are ok, but they can move. If you plan on during a lot of off road. I would stay away from using high lift blocks. I would still a try to have the back spring set up 1" higher than the front for any load you might carry.

I did some research and found that the Skyjacker Softride 6" springs move the axle forward, which is a no go.

I'm thinking that the Jungle shackle flip hanger and matching jungle front hanger which will give an effective 4.75". The only downside to doing this, is that I'll still have the OE springs (which are nicely worn out) and OE block.

https://ramchargercentral.com/jungleshddodgecomponents/dodge-rear-spring-shackle-flip-hangers/

https://ramchargercentral.com/jungleshdd...h-shackle-flip/

I have the skyjackers in the rear. I moved the axle back with these.
http://offroaddesign.com/catalog/Axle%20Offset%20Plates.html

I ended up buying all new Hangers from Jungle Fabrication and I'm going to install 56" replacement springs designed for a 1987 3/4 Ton Suburban. Since I'm putting the hangers on, I can put the axle wherever I want it at this point.

It's turned into more of a project than I anticipated swapping to 1 ton axles, but the end result should be great (I'm hoping)

I used jungles shackle flip and hangers on a Ramcharger I once had. If I remember right, I placed the front hanger in the factory position. The shackle flip swings the axle forward, but the 56" springs will then center the axle again. IIRC the rear spring hangers were 2"-3" back from factory positioning. The 56" springs I used were 4" lift springs, which gave me 7" lift with the shackle flip.

Jungles kit is the way to go for sure. To bad you live so far away I have a set of Procomp 56" springs that I would let go cheap, was going to use them when I did a flip but changed my mind.