If you save the image you'll see white on either side that kind of gets lost. I'm not Twitter savvy so I'm not certain if this is their typical format. But if the overall size is what Ford intended it does look like an 8 piece puzzle.
I found the original image they look to be using, this one.
The above image was rotated slightly in the Tweet. I found this when I overlayed the puzzle image over the image I posted above. I added a thin black border so that you could see the entire image they posted as otherwise it gets lost in the white background 6G uses. You can see I had to rotate the engine image to match the tweet. There really is no need to include the area to the left and right of the engine so it could indeed be only four pieces. For the love of God lets hope so. Having to play ****ing charades and puzzle games in order to learn the number that should have been released eons ago is really wearing thin.
My guess for the next snippet in the power ****ing puzzle mystery game would be lower left (assuming it is only 4 pieces) so as to not give it away too early.