I have a set of these...they don't look like a chrome valve cover but are nice looking. They have a polished alum look, I think they look very nice though. If you click on my siganature there is a pic of the engine compartment there, you can kind of see them.
Your right though, they come with the plenum cover and breather cap...I threw those pieces in the excess parts pile since I have the GT-40 intake and K&N breather.
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fordgasm
CLICK HERE to see my 87 GT