Are you trying to filter on Manual and Nav? You may want to just look at what comes back without nav checked off and scan. You won't be overwhelmed as there are not that many Rs to begin with. So many adds are incorrect with one thing or another, I find it better to look at pics
Touring is needed in order to get a Nav, so start there with the visual clues.
Many roadsters were loaded as GT cars though I believe less manuals seem to be out there in the later years. Our 2010 is stuffed with options and one of only 7 I think built that year with that spec setup from the build numbers I checked out in the past.
Not surprised that the numbers are low in general, and this time of year being
a bad one to move verts regardless.
Good luck,
- b