Since it's been a few days here's something new for ya'll
I'm 99% sure that these are the correct exhaust pipes. Minus 1 cylinder of course.
A WWI Biplane was stated earlier in the thread. That one is not correct. As it only
has one engine.
The 4 so called "Muffler's" have made fun of me since the start. But thanx to a clue
or two

I was finally able to track them down. So here's a clue for anyone still
looking. All 4 halves are in the same kit and don't look
down at the ocean. LoL
The remaining kits have been mentioned in the thread.

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