I might be reading it wrong, in the first RealOEM link you posted it looks like there is an entry fo manual Transmission:
For vehicles with
Automatic transmission = No
S205A=No
01 Underbody paneling, front 1 01/2005 07/2007 51757125996 ENDED
This is the third line in the parts list. I added the bold print that I think shows it's for manual transmission.
You may wish to get the part number and call a dealer just to be sure. Unfortunately, beyond that I can't help further in your problem.