2006 Mitsubishi Lancer clock spring

I'm trying to get a hold of a clock spring - the horn isn't working and the mechanic said that's the issue. I want to buy one online as they are considerably cheaper and hard to get a hold of where I live, but my mechanic said even in the Lancer 2006 model there are two steering wheels, the larger and the smaller - I need the clock spring for the smaller. (The body says "sport" on it.) Is this true?
Is there a way to find out the part number so I can make sure I'm getting the right clock spring? Is it a 50/50 gamble to buy the first one I see, or is it more likely I'll get the wrong one?
Thanks,
Shmuel