This is a real treat. It's one of only three Alpina-branded E21 3-Series BMWs, which were given a 2.0-liter four-cylinder turbocharged engine, instead of the familiar 2.3-liter straight-six.
They were made in the late 70s, when BMW was still deciding what engine to give its new 320. Sure, in the end, they took the classic approach and used the six-pot unit, but that only serves to make these prototypes even more interesting and sought-after.
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