Well the news is that I don’t get it working in game, it wont wave as the rFactor tail
the main problem is that from the rFactor GMT file of the tail, the object files are not open to be exported (encrypted?)
in those files also there is a object tag for animation that I now miss, i think
I "think" is has to be created by scratch again in Blender or 3dMax but i am not a expert
If I look at these animation then the animated bits of the supercharger are ksanim files, stuff I have no knowledge off
Come one who know how to have it working on the Manta, I know you want to
Summary for who missed it

The famous VLN Opel Manta it had a wobbling foxtail, in rFactor the Manta had a foxtail
it would be great to have it in AC to be authentic, the problem is I have not enough knowledge to get it working
Source
Destination
Get the Opel Manta for AC here (thanks to DriverOne for the link, thanks to "First Studio Racing" for the car)
MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
Files of the foxtail to work with, (original GMT file and extracted KN5 files)
mega.nz
Thanks to forum member "shi" the tail is in AC but missing the wobbling animation
If I have the tail correct working in 3dsimed and export it it will not hold my changes and shows up as below
i must be doing it wrong
Wish I had more knowledge of the modding stuff then a gorgeous face and body lol