Here we go:
The 1st helmet pack for F1 2013 will replace the GEN1 to GEN16 helmets. The helmets work with or without fins (bespoke model).
There is a HD (4096x4096px) and SD (2048x2048px) version.
Also included are the helmet previous for the menu.
The second pack will include the rest of the teams, like TR and McLaren.
Just drop the files into the F1 2013 steam folder and replace the existing ones.
Back up your files before installing this MOD.
Special thanks to ML for the models and feedback
SD version download link