Protect your 1979-1993 Mustang, while complying with NHRA safety rules with a Driveshaft Safety Loop from BMR Suspension. If you drag race your Mustang, chances are you need a driveshaft safety loop to be NHRA legal. Built from 1/4-inch laser-cut CNC-formed plate steel, BMR?s DSL008 Driveshaft Safety Loop bolts-on to the factory floorpan. This design gives you a solidly mounted loop that will stay in place should a driveshaft or transmission failure occur.