Engine

I need main bearings of a standard size for a rebuild on my engine.  These parts are no longer available under the Porsche name.  Is there a list of parts that cross reference to the 924?

Greetings,

I am trying to rebuild a 1980 931 that I rescued from the jaws of the crusher. I am needing some help with the electrical system, as it has power windows, mirrors, and the relays kind of confuse me....

Also I need to find out where to get parts to rebuild the turbo aswell. I have gone through the engine as the car sat for 10 years.

Any help would be greatly appreciated, as this is my first Porsche.