Can you weld?
That makes all the difference in the world.
If you can weld (well) you can easily do an sas with leaves. But it's a lot more, like building a front cross member, and rear hangers, and shackles, and knowing just how far to space your hangers, and how what pack to use, and how steering was set up.
Steering with leaves gets pretty expensive with high steer and all.
Look up project: Mooseknuckle on therangerstation. That's where most of my SAS build is written out on.
2000 Ford Ranger XLT: SAS, Sliders, Bumpers, Gears, Lockers, Shafts, 33gal gas tank, Shortened from 130 to 112" WB, Home brew bed and spare carriers,
Receiving: tons and a 351w stroked to a 427.
1972 Ford F250 "Explorer", 390fe Big block, lime green
Receving: 14bolt rear w/ disks, cam, 650cfm 4 barrel, intake, exhaust,