I think I've seen a site where you can get the correct nose art for many aircraft including without the mods made after restoration and in the correct colors of the period. I'll look and see who that was and get back to you.
BK
The company is Kits World War Bird Decals. They do the correct sets for many many aircraft. I don't know if they made Apache Princess but you can start looking there.
http://www.kitsworld.co.uk/index.php?FINDRETR=1&WIDENET=1&FNSTRH=220&THISPAGE=1&RADIOSORT=4&FINDX=0&RNZ=958498