Not sure why they 'didn't work on a 1980 Camaro'. Don't they also use the nylon push plugs? Either way, I find that 50% of reviews show the buyer didn't know the part they wanted and got wrong one, or not sure how it was used. It's a very common part, the world over. No reason to buy from a Firebird specific vendor, usually cost more for same part as elsewhere, but also more chance they've test fit the item on the same car as yours, and so have all the customers along with feedback if good or bad. You don't get that at the general parts shops.