Installation:

Download and install the F-14A mod here:
https://www.gta5-mods.com/vehicles/f-14a-tomcat-add-on-top-gun

or

https://www.gta5-mods.com/vehicles/f-14a-tomcat-iranian-air-force-add-on

Use OpenIV and open: 

YOUR DIRECTORY\Grand Theft Auto V\mods\update\x64\dlcpacks\f14a2\dlc.rpf\x64\levels\gta5\vehicles\vehicles.rpf\f14a22.ytd (make sure that "Edit mode" is enabled in OpenIV)


Import "f14a_sign_9.ytd" from this archive into the .ytd and save.


If you want to use it on the Iranian Tomcat:
YOUR DIRECTORY\Grand Theft Auto V\mods\update\x64\dlcpacks\f14i\dlc.rpf\x64\levels\gta5\vehicles\vehicles.rpf\f14i2.ytd

Rename the .dds to:

f14a_sign_4.ytd

Done!
