Not hardcore by any stretch, but here's my quick and dirty Tracker build, SAS on my bush truck. My reasons for this mod were simple:
Reduce the number of weak links(moving parts)
Increase ground clearance (without nasty CV angles or flimsy strut extensions)
Make trail repairs easier and faster
Gain some flex
make use of the shed full of spare Sami parts I have
This mod netted me almost 5in of lift in the front.
Parts needed:
Samurai front axle with required tracker gears installed in third (5.13s in my case)
Samurai leaf springs installed SPUA
Shackles (stock or home brew)
Samurai tierod and drag link
Wheel spacers or offset front wheels (I chose wheel spacers)
2 leaf spring hangers for fixed end of leaf spring
2 shackel end leaf spring bushing tubes (I used 5/8" x 3/4" rod ends instead)
Step 1 - hack out all IFS, including crossmember
Step 2 - remove "horn" from frame arch and plate.
Step 3 - box/plate frame where new spring hangers will be welded
Step 4 - slide Sami axle/leaf spring assemble under rig.
Step 5 - bolt up existing Tracker front DS to axle, leaving 1/2" of compression
Step 6 - plumb axle in wheel well
Step 7 - Weld spring hangers to newly boxed setcion of frame
Step 8 - Install front frame side shackle bushing tube. This step will vary depending on what going on with your front end. The existing frame rails can simply be extended 2" with some 2x4 box and the bushing tube welded to the bottom. My bumper was already in place, I used rod ends, only because I had them on hand and didn't have any suitable tubing.
Step 9 - cut and sleeve Samurai drag link to proper length.
Step 10 - Fab mounts and install shocks (I used s10 rear shocks, 9" of travel. Setup with 4" up travel, 5" down)
Step 11 - add wheel spacers and wheel.

I'm still waiting on the USPS man to bring me my spacers.
Here are the pics. Sorry, they do not reflect the order of the above steps.