(credit to @Steven Poirier for the helmets, taken from the 1997 mod for F1 2012 and was ready to be used for F1 2013)
Katayama's helmet replaces Helmet #11 and Nakano's helmet replaces Helmet #14. Enjoy!
Shinji Nakano & Ukyo Katayama Helmet 1.0
Nakano and Katayama's helmet from 1997