As regards things that have been replaced, not all were replaced due to them not working, some were replaced as a precaution. These included the ignition leads and the brake flexi hoses. I thought after 25 years, new ones would be better. The new ignition leads are Beru, the same as Porsche fit from new and the flexi hoses are genuine Porsche. The wheel nuts have been changed, not because there was a problem, just because new ones look better.
The nearside footwell fan was making a slight noise when it was first turned on, so a new one was fitted. A stone cracked one of the headlight lenses, so both were replaced to make sure they looked the same, not with the new unbranded Bosch ones, but new old stock ones, the same as the original ones with Bosch embossed on them.