OK my turn Blackout. I suggest a torsion crank with a alignment after. It will make the front rise enough to level it as you want without having to add a leaf or shackle.
To do this jack your front end up. Making sure you have the truck supported by jack stands. Where the torsion bars enter the cross member there is a bolt located on the underside of the cross member. I believe it is a 13mm. Socket would be the best. You want to tighten them. Righty tighty. I would measure the bolts after you tighten them to make sure your close to the same on each side. I counted threads and measured mine. After both sides are done lower the truck and look at your results. Make sure you align the front end after you find the right height for you needs. It took me 3 times to find my height. Hope this will help and if i forgot anything im sure someone will correct me and help. Good luck and Welcome to the site.
00' Black XLT 4x4 ext cab 4 door
3" pa body, 32 11.5 15 on M/T Classics
K&N Intake system More mods soon....