Trying to figure out where the thrustline of the engine mount for ROTEC engine should be on 7/8 scale Jungmiester

We are trying to figure out the thrustline for the ROTEC radial engine mount on a 7/8 scale Jungmeister. Here are the details from the drawings..The Rotec drawings are for a Celebrity and the Jungmeister drawings are for an 0320. We need drawings for Rotec radial on Jungmeister.