The lever is the actual stick that the knob is attached to, that's what they're developing now. The short shift kits are installed at the transmission (all of the current offerings for the FiST are of this variety).
The current STS set ups are installed where the linkage/cables connect to the transmission (under the hood)...
The part in development is installed on the shifter inside the car like wwuchris said, underneath the leather boot on the shifter