Long arms or drop brackets will both work. Look up the rubiconexpress.com SOA lift for the MJ and you'll see a list of what's needed to do 6" properly.
http://www.rubiconexpress.com/Products. ... 3F2E865797
You can sorta see the upper mounts here:
I can't find any pics of a stock leaf pack, but it consists of 4 total leafs(unless you happen to have a Metric Ton, which has 5 total), one fat one at the bottom and 3 more above it, the ends of which should be evenly spaced from each other (if that makes any sense).
Here's my 88 after the SOA, but before the 33s: