I just copied these
CLICK, then welded them to some 1/4" plate to mount them outboard of the frame, then welded some 1/4" gussets to the frame. My shackles are made out of 3/8" strap, and the holes are 4.5" on center.
For the front I used a piece of 2x4 1/4" wall tube for the cross member and some 3.5" OD 1/4" wall square tube to make the hangers. I made all my cuts with a 4.5" grinder.
I used Rancho 44150 springs with one medium length add-a-leaf, spring rate of 250lbs. If I remember right they are 4" lift rear jeep wrangler springs. They were laying around my dads shop and he said I could have them, so thats what I used . Without the add-a-leaf they were too soft and were almost flat at ride height. Over all my suspension is about 8" of lift.
I think your are a little ambitious to try and do a SAS in a weekend but if you plan right and have everything ready to go it might be possible. It took me 3 months(weekends only)to do mine, but mine fought me every step of the way.
-Jester