This is the FRONT caliper boot and seal kit for the FRONT of an original 67-8 Firebird..

These have 4 piston Calipers.. often complained about due to cost of servicing PROPERLY.. these are equipped with the larger 2 1/16"  bore pistons..  (NOT.. 1 7/8" bore like in the Camaro.. they are different)

 One kit does ONE caliper.. but your needing to look very closely at the pistons.. each of them.. and then the BORE of the caliper for resleeving needs.. this will often work all out more expensive then a new caliper..