Installation:

1: Install this mod:
https://www.gtainside.com/en/gta4/skins/118594-juliet-starling-rockabilly/

2: Extract "uppr_diff_000_a_bla"

3: Add it to the .wtd file that came with the Juliet Starling ped (by default this is f_y_stripperc02.wtd)