ID be very surprised if you broke anythign on these trails. You have to almost try or the part has to be in very bad shape. IVe seen a yota with 31's do most of this stuff so you should be ok however well judge that on site.

1990 RS 4door 3.0L V6. 2 inch body lift. 33x12.50/r15 BFG AT's, 3 Superswampers(1 on the way) CD Player, Superwinch Hubs
My pics http://community.webshots.com/user/nhmonty