See link below which I believe pictures the correct shroud.
http://2.bp.blogspot.com/-cKQ2b0_1i6...W72+engine.jpg
Here's an Ebay link for the same shroud which I bought from restoreamusclecar, but they then informed me they couldn't find it and did not exppect to get anymore. I ultimately found a used one at FirebirdCentral, but it is pretty crusty. I take the fact they are selling a used shroud as a bad sign on the repop availability.
http://www.ebay.com/itm/310292805223...%3AMEBIDX%3AIT
Do you have a book with the PN for the thermal vacuum switch?