Fregat upper stage

[Matte]

Good morning.
i'd like to know where to find a Fregat upper stage that can be configured with different payloads and mounted on different rockets. i tried both avsim and Orbithangar but no result.
thanks
Matte

 

[Urwumpe]

Good morning.
i'd like to know where to find a Fregat upper stage that can be configured with different payloads and mounted on different rockets. i tried both avsim and Orbithangar but no result.
thanks
Matte

http://sourceforge.net/project/showfiles.php?group_id=58685&package_id=124522&release_id=254547

 

[Matte]

thanks a lot Urwumpe!