so I've found out so far
part 1 - not sure, won't be hard to figure out
part 2 - maybe something to do with the springs
part 3 - drop brackets for the 4 link arms (don't know official name here)
part 4 panhard drop bracket
part 5 & 6 bump stop spacers (what happens if I don't use them, more travel, or broken parts? which parts would break?)
part 7 - no clue, they look like shackles for a leaf spring kit, but why the heck would I have that on the 4runner?