Bert, I looked at John Worrall`s book "Original Morgan" to find a pic of what may be an engine bay like yours, and from your description and the pic in the book, the air filter should be inside the black "pot" It seems there may be two different Ford engines that were fitted to Morgan 4/4`s as Rob posted, and it may be that the two different spark plug types that Arwyn suggests cover both versions...? While it seems wise to suggest it would be ideal to identify which engine you have from it`s numbers..? However being a Morgan there is ever the chance it may have been modified by any past owner..?

As for posting pics, the process can be frustrating to begin to attempt, as the logic involved seems illogical other than to those well used to the ways of the web, however it can be a slightly more logical process to post in the Morgan photo gallery, direct from your device, though the forum has size limitations, so perhaps best select a reduced size image from your device or photo programme.. To post a pic in the thread takes a little more determination/frustration to overcome but worth learning in time..Even I managed it with the help of Heinz and others..