Hey, guys, I'm in the process of getting a new distributor for my 2000 ITR, but have been asked by the seller if it has the small or large "coupling". Based off a diagram I pulled up off the web, I beleive it's part of the rotating piece that the rotor mounts to, but I'm not sure if my car is a large or small. I don't want to buy the wrong part! Does ANYONE know what the hell this is? Thanks for any bit of advice.

 

anyone?