Really NICE! My LOVE that muffler... You appear to have captured well the nuance of rust without making it all lumpy - very pleasing and real, IMHO!
I confess I have not seen, in the past few years, anyway, anyone post that the basic Russian green is an "interesting paint scheme"!

But you did it very well and surely you have made it "interesting"!
Yes - those schurzen are indeed upside-down! But that could be "Russian"!
I did get a bit of a chuckle over your jack-block... super well-done it is! But... hilarity sets in when I see that those Russians, otherwise seen to have often been somewhat "casual and less-than-wholly-detail-oriented" in repainting captured equipment, were rather "OCD" when it came to that J-block! Exceptionally careful, they were, to paint ONLY the block strapping in their standard armor green - just like as if it were a factory job!
I LIKE the whole thing and found it very pleasing as an alternative to the "typical" "OEM / end user" paint-job!
Cheers!
Bob