Check out file tamp51.zip - a P-51 for FS98 .
I spotted the file at flightsim.com
I presume you can adapt the default CFS air and dp files to an FS98 model.
Note that while the tamp51.zip *.af textures are the default palletized FS95 256-colors, you can always convert and retweak to the CFS DXT1 format... remember to keep the same texture names.
Felix, sorry I didn't post, its needed for CFS1.
Ozzy
