1 definition by Spudloiii

'Mars bar' or 'Donor car' manufactured for the purpose of supplying engines to better models of vauxhall, in particular the 'Nova'

You open the 'mars bar' wrapper and take out the 'chocolate' or the engine in this case and throw the wrapper 'or calibra' away.
See my 2.0 16v turbo engine, thats from a calibra that is!
by Spudloiii July 12, 2010

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