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Hi, Les, and welcome to the group.

As Art pointed out up above, it seems to be missing the heat shields in the engine compartment.  Those are a horizontal set of panels attached between the engine tins (which are there, surrounding the heads just above the valve covers) and the car's rear frame.  Adding those sealing panels to the engine compartment keeps that the cooler air coming in through the rear grill separated from the hot air coming off of the exhaust pipes.  Without the heat shields, the hot air from below mixes with the cooler air up above going into the cooling fan and makes the engine run hotter.   Not good.  Original VW Beetle sedans had something very similar for the same purpose.

Since it appears to be a CMC, I have a set of heat shield paper templates which I can duplicate for you and send them along.  All I ask for is $5 bucks for postage.  They are full size, on craft paper, so you can get a piece of HVAC sheet metal, lay the templates on that, outline them with a sharpie pen and cut them out - that simple.  Once made, they are easily installed without removing the engine or moving much around.  I drilled and tapped a bunch of 10-32 holes and screwed mine in and they can be removed in about ten minutes.  The templates also point to where to install weather stripping (available at Home Depot) to seal them right up.

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