14 x 5.5 wheels came on 66/67 Hemi cars, 67 440 cars, some 66 383 cars, and all 66/67 Bbody wagons. 66 wheels and early 67 wheels have the 5 lug holes and 5 holes in between like yours have. Post some pictures of the stampings you found

66-67 Hemi Wheel 14 x 5.5 A.jpg