Aye Rufus,
Simple answer, no.
The narrow case engine, as the name suggests has narrower mounts at the rear of the engine than the widecase engine. Narrowcase frames have a single frame downtube at the rear of the engine and engine plates welded to it. Whilst the widecase frame has two tubes, as per featherbed, coming from the rear of the top frame spine tube and at the rear of the engine welded to two engine plates with a tube brace between them.
I attach two images that I think demonstrate the difference.
From what I can see the Condor A350 uses a soft-tuned 350 widecase engine, so as to accomodate the isolastic setup for the upper rear engine mount.
I only have widecase models and can provide detailed measurements if required.
Good health, Bill