Is there a difference between the 1.7, 1.8, and 2.0 rear engine tin?

I have the pictured tin but I don’t know what it fits... does anyone know?

There are several hole patterns on that piece of tin. It will physically fit. I would have to look at my 73 to see if it matches that one. I think 73 and 74 2.0L are the same.

The parts book lists 3 different pieces depending on the serial number.
I took a photo of the page, as you can see it is not the model year but most probably the location and number of holes for wiring and such.



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