Yea i def think its an upgraded clutch.

So the guy just called me back, the salesmen, and told me some more info about the car. He said the engine had been changed. He didn't know to what, how or why. Just that someone there new it had been changed. I took pictures of the engine while i was there. Everything looks stock to me. I can't imagine the person would have upgraded the engine to better internal parts... For having a little over 9k miles, to already have full exhaust with long tubes, upgraded clutch, pulley, cold air intake, lowered and sub frame connector, maybe the person did upgrade the engine. That's a lot of work for only having 9k miles.

Wish i could find out more.