A727 Kickdown Linkage in 70 Duster

Mopar 904 318 2 Barrel Kickdown Linkage 1967-1972 A B C E Body Dart Duster | eBay
Could this work/fit my 70 Duster with a 360 & B&M Floor shifted A727? My Duster didn't have a kickdown of any kind when I got it. I just pulled the pan and the valve body seems to be an OEM Mopar one, not a manual aftermarket valve body. Trans1.jpg Trans2.jpg Trans4.jpg Trans5.jpg
And from 3 PO's dating back to 2000 it's NEVER had kickdown linkage and the trans is still working. How is that possible?