Official UK Porsche Club forum with a small up take.
very very busy Porsche forum
Detailed information for change the old AC system to the new r34
gases.
Hamilton Palmer - supplier of factory fit Porsche alarm spares
Powerdogs tyre calculator
1010 tyres calculator, for identifying correct tyre sizes on
different wheels.
Porsche factory option codes explained.
Tech note on cleaning the inside of a Porsche 993 Headlight (from P-Car.com).
Techical site for DIY on your Porsche.
Wayne Schofields site, who remaps and tunes cars.