Rear leaf Spring Question

[Fmspeed]

I have a 72' c-10 long bed with a leaf spring rear, 12 bolt, looks like someone put some add a leafs and some weird shackle helpers in, what i am trying to find out is how many springs sould have made up the leaf stock? also would it the axle have been above or below the springs, mine's below but doesn't apear to have any welding or cutting done to it. help me please , or i will just pull em till it drags on the ground!!!!!!!! lol!!!!!