I have one very similar to this, without the notches cut out of the back and carb plates. It was in the trunk of a car I bought years ago. The notch on the e-bay sale was maybe cut for a 2 speed wiper. My guess is that an e-bay buyer could use the lid, 4 brackets and 2 centerposts. who knows why the rectangular part was cut off-teenagers wanted to see the engine? :