(62 model years) 1951 – 2012 MORGAN PLUS 4 / PLUS 8. The Morgan’s basic design originated in 4-cylinder “Plus 4” form for 1951. An 8-cylinder “Plus 8” model was added for 1968. Both models have been produced on and off over the years, with fenders of varying widths to accomodate more modern wheels. Here a 1968 Plus 8 is shown.