Chrome bumpers are on the '71s and the early '72s. In '72, due to 5 mph bumper requirements, the chrome bumpers (affectionately known as bumperettes) were eliminated and replaced with rubber bumpers. These cars are the "L" models (L for Lusso, Italian for luxury). Which means in '72 there is a pre-L model (with chrome bumpers) and a L model (with rubber bumpers). And then there's the chrome front bumpers with integrated turn signals and chrome Euro front bumpers without the turn signals. Any black metal bumpers you see have been modified. As I recall the front emblem also changed dependent on model year and whether its a Euro spec car. There are many idiosyncrasies involved with these cars. www.panteraplace.com and www.provamo.com are a couple of good websites which discuss the history of the cars.
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