I know they slip onto the cluch and brake pedals. For the gas pedal u have to remove the pedal assy. And remove the pin that holds the pedal in place and just swap the wrx pedal on and re install the pin. There are some how tos on how to do it. Scooby mods comes to mind or sl-I.net might have some info. I have wrx pedals in my 96 leggy so I know they fit the 2nd gens
Sent from my iPad using NASIOC