A clutch and wheels ... Seriously, I don't htink even of my cars have "original" wheels .... well not original to the car certainly. Clutch? Seriously? I'd be suprised if there assessor could even drive a manual. who the hell would ever know if a clutch or "original" or not.... any 10+ year old car is going to be a combination of "who knows" parts.
Now if you had put some $5000 wheels on the car, and wanted the covered against theft. That I could understand.