Engine number and ID

Hi guys,

I cant find my engine number. I was told by a local Aussie that it was on the flat near the base of the dizzy and I would have to access it from the front. So today I pulled half the car apart to get to the front of the engine, and nothing!

So then I googled and located this great page:

http://www.panteraplace.com/page110.htm

but even so, there isn't much here that applies to my car. Out front in the boot close to the brake unit I have the ID numbers and VIN. DE TOMASO 874 * THPNNE 06927 *

I have nothing on the drivers side door jam except four holes!!

In the engine bay I don't have the large ID plate, but I do have a small black tag about the size and shape of a dog tag, with just five digits on it. The tag is black and the five numbers are stamped 06023

I've cleaned and scrubbed the block just up from the bellhousing and there is absolutely nothing there.

So is my engine number 06023 and it was never put on the block or is this all too weird.

Our registration dept won't register the car unless they can see then engine number on the block, so if we can identify the engine number, I'll have it stamped and be done with it.