SOA is Spring Over Axle. The leaf springs are mounted ontop of the axle:
SUA is Spring Under Axle, or the leaf is mounted on the bottom of the axle. Our Jeeps come SUA from the factory:
SOA is a pretty in depth method of lifting your Jeep. On stock leafs you can get as much as 5.5" of lift, mainly you do it for more flex. Done improperly and it will give you nothing but nightmares. I would stick with an SUA setup.
[URL="http://www.jeepforum.com/forum/f12/another-5-2l-yj-thread-1503048/"]My 5.2L Build thread[/URL]
-1989 Jeep Wrangler 2.5L, soon to be 5.2L
-1996 Jeep Grand Cherokar 5.2L, donor and rainy day driver
-2004 Kawasaki KLR650 sunny day driver
[QUOTE=mudsweatNgearz;21162729]Leave em off and weld an I beam on. Bumperetts just scream homo.[/QUOTE]
"A well regulated Militia, being necessary to the security of a free State, the [B][I]RIGHT[/I][/B] of the people to keep and bear Arms, [B][I]SHALL NOT BE INFRINGED[/I][/B]."