Vehicle: SUBARU WRX STI NR4
Livery: Subaru Rally Team USA #75 T.Higgins
Class: NR4/R4
Please make a folder as below and put in the downloaded pssg files.
... DiRT Rally 2.0\cars\nr4\livery_00\textures_high\
nr4_tex_high_00.pssg
nr4_tex_gr_high_00.pssg
nr4_tex_sn_high_00.pssg...