First off I don't know their proper name and have only seen them on 1 '72 RR. They both bolt to a stud near the wiper motor and the other ends go diagonally to the fender bolts on either side. Questions.
1. Are they only on 72's
2. Are they body color or black, (i have only seen black)
3. What is their purpose?
4. Do I need them or can I leave them off


'72 Road Runner
'72 Dart Swinger 340
'12 Challenger R/T