First news. This is a ZModeler screenshot of my sixth conversion.
I've got lot of troubles with the 3D model normals, but anyway I've found the way to don't have them.
Let's do a stock of the situation after some days of work and preparating from the beginning.
Things done:
1. Created the folders structure;
2. Made the 3D car model for MM2 with the detachable parts and the driver in ZModeler;
3. Found the ten colors and names in the Skoda Octavia official website;
4. Made the other paintjob textures;
5. Start the making of the dashboard with the two versions;
6. Made the damages file and a semi-realistic car tuning;
7. Created a first version of the Readme file.
Things to do:
1. End the making of the dashboard with the two versions;
2. Do the vehicle showcase;
3. End the Readme file.
And these are the 2005 Skoda Octavia conversion features.
New model: Yes (made by Trall, edited by JVT)
3D interiors: Yes (made by Trall, edited by JVT)
3D wheels: Yes (made by Trall)
Driver model: Yes (new model)
New textures: Yes (made by Trall, JVT)
Dashboard: Yes (day and night versions)
Damages: Yes
Damage textures: No
Detachable parts: Yes (three parts, license plates and roof antenna)
New tuning: Yes (semi-realistic)
New sounds: No (from an MM2 car)
Number of colors: 10 (original Skoda Octavia colors and names)
Soon the in-game pictures and the release date. Stay tuned. Thank you for your comments.
Full dashboard; 
Normal dashboard; 
Driver dashboard
It looks really good! good luck 
)