Cap

1. Open OpenIV
2. Go to Grand Theft Auto V\x64v.rpf\models\cdimages\streamedpedprops.rpf\player_one_p
3. Replace the file:

p_head_diff_019_a.ytd


trench coat and mask

1. Open OpenIV
2. Go to Grand Theft Auto V\x64v.rpf\models\cdimages\streamedpeds_players.rpf\player_one
3. Replace the files:

accs_diff_009_a_uni.ytd

uppr_diff_022_a_uni.ytd


If you have DVD or Rockstar Games Warehouse version of GTA V and every time you edit files Launcher download original files back:

http://gtaforums.com/topic/798272-how-to-use-openiv-mods-folder-and-keep-your-original-gta-v-files-safe/