Pegleg, great to see you back with us. I figured you've probably been busy trying to complete the work on your Grande. The original wiper blades for the 71-73 Mustangs were 18" Trico standard blades with the side pin mount. The same ones were also used on the 71/ full size Ford cars. Although some of them probably could have used them, there were no anti lift blades in use by Ford then.