They sure have stretched the idea... Looks entertaining to drive. I remember in the 80s sometime, Steve Cropley, then editor of CAR magazine, fitted a turbo to a 2CV but sadly the thing caught fire. Extremely fast and unnerving to drive/. Also two friends of mine fitted Citroen GS engines to their 2CVs and used to delight in burning off the XR3 and hot Cavalier crowd at the lights. The only clue to the bigger engine, effectively 2 2CV engines bolted together, was an extra 3 inches plus in the chassis to make space.
At the risk of being tedious, most people don't realise that in their day, when the cars were made in Levallois, Paris, each 2CV engine was hand assembled by one person, the engines are aluminium and in several places, instead of oil seals, they used oil 'throws' to literally spin oil back from whence it came. Probably all ideas borrowed from bikes. zzzzzzzzzz