Looking at Diamond Axles web site they have this info posted for the front axles

Front center sections:

* Ford 9" - 31 or 35 spline
* Toyota 4cyl/V6, Hi-pinion/low pinion, standard/Electric locker
* T100/Tundra/"8.4" - 30 or 35 spline

Note that there's the 8.4 inch again!
<img src="/forums/images/graemlins/zombie.gif" alt="" />


96 T100 4x4 - 35's, 4" SL, 2" BL, 4.88s, ARBs, custom bumper & E9000 winch, etc.
99 F-350 4x4 superduty supercab turbodiesel longbed