Gentlemen, I think that we may be looking at a MiG 17.
What I hadn't noticed is that there are three fences on the wing of the aircraft in the initial photo, the one nearest the fuselage not being particularly conspicuous.
Also the outboard fence stops, not unreasonably, at the aileron.
Shown quite well here:
And as far as that engine is concerned:
Link
Link
Apologies for brevity but it's past my bedtime.
Quick PS: Bruce, see the caption to the first photo in the second link.