Flexplate orientation/Transmission to engine mounting?

MopaR&D said

Don't bother with those, they aren't necessary. One of those cases of Mopar over-engineering, like the goofy reverse-thread lug nuts.

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They are also used on the B200 and B300 Vans, not sure on the B100's. I have them on my B300 with a 70 340 attached and a short filter fit with the brackets on. A longer filter will hit the frame.