sorry this reply is months late but it might be to a 68 Shelby steel wheel car. Measure the center hole..I believe the 68 15x6 KH center hole was just under 2 1/2 ". backspace was 4 1/4", measured 7' wide and was 16 1/8' in diameter. It has the 4 nubs which is correct for a 68 Shelby and also marked "Kelsey Canada" 15 x 6 JJ on the inside which is also right. Do you see "K2 over 8 on the rim outer loop by valve stem? Hope this helps-