Pretty neat there... I have a 1/4 scale Corben Super Ace (also used the Ford, "A" engine. Although the Super Ace does not allow for showing as much of the engine as your Pete does. One question....Why not use the distributor that mounts through the cylinder head?
I used this illusion on my dummy engine and used small strips of brass sheet for the plug connectors to the distributor as the full scale engine uses. Gives agreat effect. Once again great scale rendition.