Dragster this is the barnjob owner clem johnson driven by jim lineweber 1949 vincent A quick Google search reveals his Vincent was a Rapide. It was based off of a 1000 Rapide, but he put a 1600cc engine in it. How should we call it?...1000 Rapide or 1600 Rapide? I'd choose the former as that was actually a production model and then add something like "with 1600cc engine" to extra info.
Do we have to comment at all? It's a home-brewed special that started life as a 1000cc Rapide but evolved over a very long period, the engine wasn't replaced but modified, a Rapide bored to 1600cc is still a Rapide?