NoSkils, you got 9" long shackles? That's what it'd take to get 2.5" of lift from shackles. If you've got shackles 2.5" longer than stock that will net you 1.25" of lift. Shackles only lift half the difference in height from stock shackles, since the axle is in the middle of the spring and your only lifting one end.
33" swampers will be taller than most other 33" tires, they run closer to actual size. Most tires run slightly smaller than listed height. Check out the Swamper Radial if you want the ultimate in traction while retaining decent road manners. There are good off-brand MT's like Kuhmos and Ventures, to name a few.