The look of the Jab twin was growing on me until I re-watched the video and spotted the rear of the engine cowls with the big gaping hole. Looks a bit untidy. Some re-designed streamline engine cowls would go a long way to enhancing the beauty.
Just thinking about $$. A Rotax 914 which is required to power a J430 including required CSU is approximately $40k plus fitting. This kit should retail at around $35k plus labour at a rough guess.