Clark--I think I figured out why there are two part numbers for each one--I think it's color differences, like gray, tan and black . . .Don't ask me why there are two part numbers for each side so you better have your dealer cross reference with a non-Lightweight Package VIN to get the right part numbers.
The images below are from this page...
Item #9 below are the under seat shields and Item #13 are the smaller inside latch covers. You may need item #12 as well.
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