these part numbers are common in Chevrolet vehicles. you can do a search for them to see if they fit your application.
this was from a nova. also correct for chevelle many are the same as trucks.
http://www.gmpartswiki.com/query
3898610 Ball Stud (to Frame bracket)
3866568 Ball Stud (to engine)
3743360 Dust seal washer (frame bracket side)
3750692 Frame stud seat retainer spring
3743349 Nylon ball stud seat (x 3)