Sounds more like a stolen Cupra R being sold on a legitimate Leon S log book after having its chassis No etc changed to match the Leon S. Seems like a lot of trouble to go to to change the bodywork, engine, gearbox, running gear, interior, dashboard etc etc etc and then to make the advert sound like its a cupra R rather than a modified Leon S. Surely cheaper to rebuild the crashed cupra R and sell on as a Cat D?
Avoid like the plague!!!!