They all bolt onto the shaft. LE and possibly SE trims had leather-wrapped steering wheels which other trims did not. The other difference is the switch sets on the steering wheel. Some will have no switches on the sides, some will have just the cruise control switches on one side, some will also have a set of switches on the other side (audio control, I believe?). So, the plastic panel that covers the back and sides of the steering wheel will have cutouts on one, both or neither side, depending on the switches used on that trim.