49 in. Length Racing Seat Belt Harness Bar - Stainless Steel
Description: Seat Belt Harness Bars are designed to keep drivers safe while testing the limits of their cars on the track by keeping the racing seat belt harness at a 10-15 degree angle to the shoulders. If the harness is out if this range, the harness keeps the racer trapped in the vehicle...
caautoparts.com
I have my own ideas about good and bad but I'm interested to see what y'all come up with. I know about the Corbeau offering.
I checked a different site and it says 79-14 mustang are compatible.