I need to rebuild 930 engine and I need some information on how to do. I have rebuilt  many bmw engines. Is there a website or instructions on line. Thanks 

There are plenty of people on here who have rebuilt their own engine and so they should be able to help you along the way.  Building a 911 engine is very technical compared to any other engine.  The book says circa 40 hours for a straight rebuild.  I modified mine and as a result I probable doubled that time.

A good book to read is : How to Rebuild and Modify Porsche 911 Engines 1966-1989 by Wayne Dempsey.  I think it costs about £14 and available from Amazon.  Well worth every penny. 

Good luck with the build.  Post your progress here.  Im sure everyone will be interested in the journey.