This is the rear brake BLOCK that connects the two lines going out to each wheel cylinder and the rear hose.

You can use this with stainless pipes or steel.. we normally also have those in stock, along with the flexible hose if needed.

Fits both 67 & 68 Firebird & Camaro  bodies with rear drum brakes as standard.

 Plus the full size 58-68 Impala, El Camino.. 

...... as long as nobody has changed a rear hose for a hose that incorporates the block into it.. which has happenned more then a few times.