Fesler Billet's Stainless Steel Hood Adjusters come with rubber bumpers and are sold individually. Available in 1/4-20, 5/16-18 and 7/16-14. They fit most applications.
NOTE some compatibilities:
5/16-18 GM 1st Gen Camaro, Nova, Chevelle, C-10, Ford Mustang, Dodge Charger, Cuda *
1/4-20 and (2) 5/16-18 1955-57 Chevy
5/16-18 and (2) 7/16-14 2nd Gen Camaro