First, welcome to the site David. We have several UK members so it's always nice to add another one to the list!
As for your L14 engine, IF it was assembled at the Tonawanda, NY engine plant, there will be a "Number 1 Team" decal placed on the passenger side valve cover toward the front (see example attached below).
If the engine was assembled at the Flint, MI plant, there won't be anything on either valve cover.
Ed