http://passwordjdm.com/PasswordJDM-Quick-Release-Fasteners-P4746C329.aspx
^^ yeah those are what most people use
A lot of people use Dzus fasteners for a quick release front bumper. Are you going for that or do you just want your bumper tabs fixed? I have seen people using thin strips of sheet metal epoxied to the bottom of the go with Dzus fasteners. You can find the cheaply if you don't go with the brand name.