The first appearance of a 320 turbo in US racing was at Road Atlanta, April 1977, 3rd round of the IMSA series. Hobbs finished 4th o/a in the main race. Its blown 2-litre engine was developed by McLaren Engines in the USA.
Another 2-litre 320 turbo was seen at Brands Hatch and this was built by BMW Motorsport in Munich.
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