Spiess Tuning is the common identity of Siegfried Spiess Motorenbau GmbH, a motor vehicle engine tuning company based in Ditzingen, Baden-Württemberg, Germany. Today Spiess Tuning is most famous for its Formula 3 motor racing engines based on the Opel Family II and two iterations of Volkswagen R4 engines.

Can we draw the following conclusion?
spiess tuning based multiple engines off of volkswagen engines

Options: (i) Yes. (ii) It's impossible to say. (iii) No.
(i)