Fix the aspect ratio of the Miura so the wheels are ROUND and you’ll see just how much different the 2 cars are. In those days, GM engineers wouldn’t build a windshield with more than 60 deg of rake, because they wouldn’t pay the cost of processes necessary to get the optics of the glass right. (Remember, as the glass leans back farther you have to look through more of it!). No, GM was duly impressed with Italian cars of the era. The Second Gen (1970) Camaro was inspired (dare I say copied) from the Ferrari 250GT Lusso.
Many of these Italian cars could regularly be seen around the Tech Center and especially GM Design Staff (aka Styling) in those days. They even commissioned DeTomaso to build a one-off Mangusta with Chevrolet power.