Guys, I appreciate all your replies!
Pete - I kinda figured there were no decal sheets for these aircraft available, but I thought I would throw the question out there anyway. What size would the code letters be? and what colour - sky blue or medium grey??
Karl - I'm good for roundels, but I might take up your offer of the code letters. Is there any chance you could post a pic? (sorry to be a hassle).
I was really hoping to model an aircraft with nose art, however AM-T A29-184 would be a good choice as Hodgkinson knocked down two enemy aircraft in this bird. HOWEVER doing a bit more snooping around I found this P-40. Pete do you know the ID code and serial number for it? The pluto nose art I can get from the nova scale Vengeance sheet (looks very similar to me).