PET5 software on the CD This is an electronic "Parts Microfiche" that shows blow-ups of every assembly on the car with part names and numbers. It covers all Porsche models and years up to around 1999 or so, both ROW/Euro and US Versions. This is a great tool to help you not only see how things go together but also to determine what parts are needed and 'compatibility' of parts from one year to another.
$15 and $5 for shipping