Let me throw this out to you, as it will probably come up at some point in the future.
The Porsche Red Book is often cited as a great resource, and it contradicts Rich's info:
That second range of numbers is shown here as a 911E Type 911/01 engine. But this must be wrong, as it is different from what you know you own.
Is your VIN in the 9110120001-9110124126 range?
Mark