I just picked up an 85 4runner, I was told it has a 6" lift on it. The owner had no idea what kind of lift it was because the owner before him installed the lift. I know that it has old pro comp springs (they need to switched out) and longer shackles. The truck has the typical rear sag that goes along with the 4runners. It looks like it may already have an add a leaf in it. Im not sure. It is the smaller much thicker leaf that is on the bottom of the spring pack and the rear still sags. I don't want this leaf on my truck My question is can I use two of the longer add a leafs and stack them on top of each other to replace this smaller one and fix my sag?

I was looking at this add a leaf.

http://store.summitracing.com/partde...?part=SLF-7000

Thanks.