MG MGC: an MGB with a straight-six, and a reputation it never deserved (1967-1969) The MG MGC was the MGB given a 3.0-litre straight-six, conceived as a replacement for the big Austin-Healey 3000 and damned in period for nose-heavy handling. A guide to the redesigned six-cylinder engine, the truth about the handling reputation, the roadster and GT, what to look for when buying, and why a sorted MGC is now a sought-after grand tourer.