Originally Posted by Jax2A
As others have pointed out the engine in the Marsh is a stressed member.
You know, I bet you could make the engine appear to be part of the frame if the "missing link" in the lower loop was a cradle in which the engine could sit, a three piece affair with tubing or even bar stock wrapping around and under the block, painted black of course. Just a thought. It would get the motor lower and that would be a plus in a frame of this sort as the tank may well crowd the spark plug with the engine in the usual spot.