I think the lowest you could go with off the shelf stuff would be 4" (3" Springs and the hanger adds an inch)
If you made your own spring packs (combo of rears and front leafs is popular) you could do it though. Should be lots of builds on Pirate4x4 with pics.
Mine was 4" springs with the hanger and it was way to tall. It made the 36's look small.