Falcon:
You can also go into the SOH Warbirds Library, search for "Tigercat" and on page 3 you will come to Milton Shupe & team's rendition of the F7F Tigercat.
It is complete with sounds. The next entry after that is some modified files for the sounds.
Now I know that this is again a twin-engine aircraft and you'll have to do some finagleing with the sound file.
You also might try to search "Lawdog" to see if he ever did a sound set for a single R-2800.
That's about all my ideas for you, sir.
EDIT: Go to the Warbird Library, search "Bearcat" and on page 2 at the bottom, you will find Lawdog2360's CFS2 soundset for the F8F Bearcat.