Rear leaf spring replacement

Hey everyone,

So recently i noticed that my leaf springs seemed to be kind of flat, upon further investigation/research, I found out my original 211,000 mile leaf springs were shot (weird right?)

So I'm in the market for new rear springs/shocks, and I've settled on OME CS046R for springs and 5100's for shocks. And i was wondering if you guys could answer a few questions?

1. What would be the true lift increase in the rear swapping out the slightly frowning springs for dakars? It says 2.25", but i feel like it would be a larger increase because I'm lower then stock height b/c of the saggy springs.
2. What other parts are required to to a Stock to Dakar swap? Are new shackles/U-bolts/Brake lines/etc required?
3. Would the shackle moving and slamming the tire into the wheel well @ full flex ever be a major issue? I'm running 32x11.50 BFGs and I have this problem currently at full flex.

That's it! Thanks in advance for your help!

 

Did you ever find out an answer? I'm interested to know as well.