To install simply unzip the file and replace the cars folder;
My Documents/Assetto Corsa/cfg/cars
Please review if its been of use to you
***Please note I personally use a FOV of 56 for this which for my settings are optimum. If you use something considerably different you may need to adjust the camera's somewhat. Please also note I have just moved the in car camera location for each car to one that i find most useful while driving. I have not altered one of the other cameras. This is fairly easy to do but doing it for every car was very time consuming so thought it would be useful to others if this view appeals to them. If you prefer the default setting it is as easy as clicking a button to return it back to its original state***
Although the car interiors are a thing of beauty in this game, I've always felt that car games never give you as good a visibility as real life when you have the standard in car view unless you are very fortunate to have a three screen setup that can be placed very close to your driving position. This is due to the fact that in real life you can see all around you while in a game all you can see is a rectangle of sight which for most people cannot be placed that close to your face and therefore in comparison to reality you are hindered somewhat.
Fortunately due to the fact the detail in this game is so good, the dashboards still look incredible close up plus with the fantastic "Real Head Motion" mod if set on subtle settings, you can get some truly stunning gameplay while not being hindered by the lack of what you can't see.
If you were wondering what filter I use, it's my own and you can download from here;
http://www.racedepartment.com/downloads/wagnums-ppfilter.8725/
If you want Real Head Motion as well here is a link to MagicFr's website;
http://magicfr.changeip.net/RealHeadMotion/RealHeadMotion.php
Please note there were complications with it working after the 64bit update so please read over the forum on Assettocorsa.net to get it up and running. Alternatively you can just revert the game back to 32bit mode in the menu to get the desired effect if you dont fancy reading through the forum.
With RHM also being used;
And without RHM;