Only set I can find is this one by Iliad Decals here in Canada
Decals for 5 A-1H aircraft (USAF in standard SEA camouflage and VNAF aircraft in tan and red-brown over white): #39665 'Lieutenant America', 1st Special Operations Squadron, Nakhon Phanom, Royal Thai AFB; #37628 with shark mouth, 22nd Special Operations Squadron, Nakhon Phanom, Royal Thai AFB; #37552 'Spad Dad', 6th Special Operations Squadron, Da Nang, early 1969; #34609 'Bad News', 22nd Special Operations Squadron, Nakhon Phanom, Royal Thai AFB (black underside/no national insignia) and #39797 ex-USN, 83rd Special Operations Group VNAF, Ton Son Nhut AB, 1966. Includes color profiles, b/w plan views, and color notes.
I think the A-1H is the same as the AD-5 I believe.
The only other set I can find is for the AD-4N from Zotz, but they are all African nation markings.