The same side strakes Herr König added to the SEL are the ones he removed from the Testarossa. I knew I'd seen them somewhere before.
A modified SEL features in the linked article.
"However, it became even more comical when König later in the eighties attempted to modify precisely the Testarossa. This time his main course of action consisted of removing the aforementioned side strakes! I can’t help but conclude that he must have been a brilliant salesman when he could sell both modifications concurrently, explaining the undoubtedly extortionate prices with equal conviction, regardless of whether it was for his services of adding or removing the gills."