Grinnelli Designs has created a very good and free module representing the F22A
While this mod is not full fidelity, it is a fun module.
You can download the F22 mod here
See the F22 module in action here
This mod does NOT need to be installed on your Fox3 server in order to use it, this mod only needs installed on your client.
To install this mod on your client, extract the zip file and move the F22A folder into your
C:\Users\yourname\Saved Games\DCS.openbeta\Mods\Aircraft OR
While the F22 module is built on the FC3 F15C module it does have expected characteristics of the F22. Most of the F22 information is classified and this is not a "REAL" representation of the F22's capabilities. However, it is a very fun representation of the F22 and will add some modern fun to your DCS missions.