Ohhh...
UPR Products has one but it's only available on eBay
https://www.ebay.com/itm/Mustang-Clutch-Master-Cylinder-Rod-PERMANENT-Lifetime-Fix-Repair-2005-2014-S197/113916352700?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
Here's another listing & seller indicates USA made...
FORD Mustang Clutch Master Cylinder Rod PERMANENT fix/repair 2005-2014 V6 GT | eBay
UPR Products has one but it's only available on eBay
https://www.ebay.com/itm/Mustang-Clutch-Master-Cylinder-Rod-PERMANENT-Lifetime-Fix-Repair-2005-2014-S197/113916352700?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649
Here's another listing & seller indicates USA made...
FORD Mustang Clutch Master Cylinder Rod PERMANENT fix/repair 2005-2014 V6 GT | eBay