I know my advice is crap,(well according to some people on this BB),, but was surfing and came across a site:
http://www.markwilliams.com He builds all kinds of axles,, looks to be mainly for the drag racing crowd, but looks like it could slide into the 4x crowd,, I saw where you can get a 40 spline full floating 12 bolt ,9", or 60 rear with all hardware ,,with any kind of housing length and a 5 on 5 1/2 " lug pattern and even vented rear discs,,,,anyway just another option thrown out there, I guess!!!!! Jaime
88 V-6 4-Runner,custom straight axle, with Dana 44, dual t-cases, 12.5" lift, ( built to wheel )