Bringing back an old thread, Finally got my Gen Right High Fender kit finished. Alot of work but very clean and well worth it! 3" Suspension lift 1" Body lift and 40" Tires, Check My Members Rides for pictures.
Best Deal Spring in Payson, They should be able to build you a brand new pair to your specs for that price, they do springs for me all the time. And they stand behind them and will take care of you if anything happens.
X2 I Run that setup and have been running it with fortys on an 05 LJ Love it! If your running coil springs I would go at least 65" wm to wm wide, mine is 63" and the coils are kicked in on an angle to clear the knuckles and they rub everywhere!
Front or rear case? used fronts are plentiful and cheap and new rears are pretty reasonable brand new, try Teraplus they do lots of 4 to 1 conversions and should have what you need.