First, i am no gear/diff guru but i thought this might be interesting. Saw this on Tacomterritory.com forum. JT parts which is a vendor here, is offering new 4.56 gears which seem to be thicker and stronger than the regulars and also allows you to use the stock carriers on the 3.73s. Supposedly, they will be out in late April. Hopefully JT parts can shed some more light on the subject. Here is the link to the other forum.
4.88 Gears - 05+ Tacoma, 03+ 4runner, 07+ Fj Cruiser - TTORA Forum
