Chassis/Engine Numbers
 

What is the best/easiest/quickest source to compare chassis and engine numbers to determine a match?

I am not well-versed in this area but I use Patrick C. Paternie's Porsche 911 Red Book 1965-1999 book for this purpose. It should be available at your local book store and the cost is relatively cheap (mine was $11.95). It lists the various models produced it year, the quantities, chassis serial numbers, and engine serial numbers. It also has a great deal of other info that makes it an interesting resource (option codes, paint codes,...) .I hope this helps.

Like Daryl said, get the Red Book.

The Red Book is good for making sure the correct type engine is installed in the chassis, and for getting a rough idea of the engine # is approximately correct for the VIN. For example, if your VIN corresponds to the 500th car out of a 2000 car production run, then the engine # should be around 1/4 of the way through the engine production run. More engines were produced than cars, so that why it's only an approximation. A Cardex (or Certificate of Authenticity) from PCNA will give you the actual serial number for the engine installed in your car.