the wheel has 2 clamps as shown. these are extremely sufficient. i dont know what bose is talking about. i have never ever had a problem. i oculd have a bomb go off before my wheel moves. along with the clamps, there is the space for wire management, and i believe 4 permanent mounting screw holes.
for the shifter, there is the 2 clamps, and then a third screw thing, to hold the back in place. this is usually glued in place, but i have had it move one time or two. (i also have a VERY strange mounting place for it.) this has i believe 4 mounting screw holes, for permanent attachment.
the pedals are meant for either carpet or floor. it has sticky rubber for the floor, which generally works alright..not great. then you can drop down some spike things that grip the fibers of the carpet, and if your carpet doesnt move, your pedals probably wont. these also have a bunch of permanent mounting screw holes.