Today I picked up a 72 FJ40 and I am ready to start wrenching but have a few questions first. The yota was an aircraft tug for many years requiring large amounts of weight on the front and rear so the leafs are shot. I am thinking of running a 4in lift but I would like to put the axles under the leafs for better clearance. It looks like I might have to lengthen the driveshafts a little and of course through on new spring perchs. I would like to have disk brakes in the front, so I was wondering if one of my spare pickup axles would work or a converson kit?
If anyone can share there experences it would be greatly appreciated

I wish I could work on FJ's at work (I work on tugs)

Spring over swap is pretty common. Should give you 4". Check this article

http://medusa.ih8mud.com/cruiser/Springover.html

Also check www.ih8mud.com they have a bunch of FJ tech

Check out the article here on how to swap mini truck parts to get disks up front

http://www.4x4wire.com/index.php?op...p;catid=68:toyota-tech&Itemid=53

Do it right and get the knuckles turned.