Thank you for the photo, William. I suspect that they left off the steel plates for a "beauty shot." I suspect that my engine was replaced early on because the car had a vibration problem. Who knows, maybe even mechanical failures of the castings as a result of inadequate support.
I will get the number off my front cover tonight and post it, in case anyone knows how to relate that number to the production number of the engine from which it originally came.
A Solex PAIA carburetor, much like the one in the photo, recently came on eBay, but it did not appear to have the correct fuel connections and it was a German Solex, not Italian. The differences can be very slight, but they are there, in what I have observed. (Many Mercedes used a Solex APAI, but with detail differences from the Itailan made ones that we see on the Alfas.) Any one know whether the PAIA, as shown in the factory photo above and used on the first few hundred cars (including, I suspect, the 1955 Mille Miglia entrants), was German made?
The perfect is the enemy of the good. Voltaire