I looked up the fate of 58-1226 on Joe Baughers website. It appears that this particular aircraft survived its Wild Weasel days and served at Phan Rang. It was damged over Laos in summer 1968 and the crew were able to nurse the aircraft back to over friendly territory in South Vietnam where the crew ejected and the aircraft crashed.
Now back yo the decals, here is another from F-100F that has the AF81 prefix to its last three on the tail code. But also notice the zero that precedes the 8... do the kit decals include that 0?