First 806 is not a Mig 17, It's a Mig 15.
We can tell this because of the Nose number red 806 the same as this photo
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Now if you look on the Wing we see 2 fences that's Mig 15 Chinese Production J2
Mig 15 has 3 fences on the wing.
Now as we see here.
View attachment 43723
I am not sure what those are but I doubt weapons perhaps an updated radio. If you look at this side photo It seems those structures vanish. Weapons on both the Mig 15 and Mig 17 are wing mounted except for the Cannons. This is due to the low ground clearance of the gear and Fuselage vs the ground and the Air Breaks.
This image makes it clear they are very thin