2001 Boxster base 46k miles. 3rd owner and I am sure it is original IMS. No issues with metal in filter. Change oil every 5k miles. Got IMS Guardian. I used to worry about it and now don't. I am in my 3rd year of ownership. If it blows up then I will face the music then decide what to do . $4k here for clutch, rms, ims is too much to spend on a second hand car.
Guy