the front bumper mounting often blocks the headlights, like on corey's FJ. that's not an option for me, although it was considered.
mine ended up out back:
there are double nuts on the stud that secures it. usually it also has a cable lock through it and my fuel can (not indestructible but a big deterrent to someone walking away with it)
i used to carry mine inside the vehicle, it would JUST fit between the interior panels rear of the wheel wells. i hated it there, so it lives on the bumper now and gets oiled before using it.
1998 Toyota 4Runner SR5 V6 4x4 + a bunch of goodies. Lifted, Locked, Illuminated, and Armored. Winner, "Best Offroad Truck" - 2010 Pismo Jamboree
Welding and Fabrication services available, PM me for details. I can even come to you!