I have this one:
Lots of room.
Lots of people like the group 31s (mud folks are almost unanimous) but they are a little tougher to fit.
If I did it again, I'd probably try to stuff that guy in there:
Paul McCumber - Longmont, CO
1995 FZJ80 - 2004 4Runner -1995 SC300
"It's a 1970 Firebird, the car I've always wanted and now I have it. I Rule!" Lester Burnham - American Beauty