Me too - no images. I was only aware of the uneven-spaced rigid six wheel truck.
Re: my earlier post - the 15-44 and 16-44 shared the Loewy body, often with oval cab windows. Later 16-44 units had a "baby" Train Master body, and as near as I can tell, never had AAR trucks. But the earlier bodies had Timken-bearing AAR trucks on both horsepower variants. I found 13 railroads that had them; four on the 16-44.
The Lionel may be the Train Master body. I think I would use the Lionel side frames. Lionel has gotten very accurate lately; I have Lionel trucks under an Overland PA, and they look as good as CLW or Overland.