Fellow Team Camaro member needs help ID'ing part
 

anyone know what this is for/ Its was found in a 69 350 RS

http://www.brainerd.net/~knudsen/69RS/rubbergidget.JPG

From Jim (click)

Its behind the windshield washer bucket and battery tray, on the pass side (RS) on the horizontal flat metal that lies between the inner fender round part, and the rad. support. There had to be something that goes thru it but Im stumped??