Install:

1. Copy Aircraft, Objects_dp and Scenedb folders to you main CFS2 directory.
2. Now, go to the aircraft folder in CFS2 directory and copy model folder and texture folder from F4U1A_CORSAIR to F4U1C_CORSAIR and F4U1D_CORSAIR folders.
3. I recommend you to download custom textures which better represent the "C" and "D" versions.
You can find it at the main downloads sites or in the following links:

http://www.netwings.org/library/
http://www.sim-outhouse.com/index.php?loc=pages&page=downloads
http://storage2.free.fr/ (Easykill site)

4. In order to have the correct weapons names displayed by the simulator, you need to copy the entries in mdl_names.txt provided here to the mdlnames.txt in the main CFS2 directory. Make a backup of the file before change it and put it in a safe place.
5. Done! Now, next time you start CFS2, the aircrafts will be ready to use.

Uninstall:

There is a list of files that needs to be removed:

In Objects_dp folder:
WEP_DB_154gal_drop_gp_a.dp
WEP_DB_154gal_drop_gp_b.dp
WEP_DB_154gal_napalm_a.dp
WEP_DB_154gal_napalm_b.dp
WEP_DB_170gal_drop_gp.dp
WEP_DB_Brewster_rack_L.dp
WEP_DB_Brewster_rack_M.dp
WEP_DB_Brewster_rack_S.dp
WEP_DB_f4u1a_hook.dp
WEP_DB_F4u1c_Cannon_a.dp
WEP_DB_F4u1c_Cannon_b.dp
WEP_DB_f4u1d_rocket_pylons_la.dp
WEP_DB_f4u1d_rocket_pylons_lb.dp
WEP_DB_f4u1d_rocket_pylons_ra.dp
WEP_DB_f4u1d_rocket_pylons_rb.dp
WEP_DB_f4u1d_wing_pylon_a.dp
WEP_DB_f4u1d_wing_pylon_b.dp
WEP_DB_f4u1d_wing_pylon_covered_a.dp
WEP_DB_f4u1d_wing_pylon_covered_b.dp
WEP_DB_f4u1d_wing_pylon_sway_braces_a.dp
WEP_DB_f4u1d_wing_pylon_sway_braces_b.dp

In scenedb\weapons\Scenery folder:
db_corsair_weapons.bgl

scenedb\weapons\texture\
Db_brewster_bomb_rack.bmp
Db_f4u1a_fuel_tank.bmp
Db_f4u1a_hook.bmp
Db_f4u1c_cannon.bmp
Db_f4u1c_cannon_blue.bmp
Db_f4u1d_rocket_pylon.bmp
Db_f4u1d_rocket_pylon_blue.bmp
Db_f4u1d_weapons.bmp
Db_f4u1d_weapons_blue.bmp

Now, you need to delete dp file and air file in the F4U1A_CORSAIR folder and rename the extensions of the files ".air.bak" and ".dp.bak" to ".air" and ".dp"
Go to the main CFS2 directory and replace the mdlnames.txt with the original that you saved previously.
You need also to delete the F4U1C_CORSAIR and F4U1D_CORSAIR folders, as they will not work properly without the weapons files, or use them with the default dp of version "A".