ENQUIRE on availability - this is more of a help listing only.

People ask or say they need a new one. on a Firebird.. there is NO ball joint on the pitman arm. its on the Drag link. 

The pitman arm extends from the steering box main shaft to the drag  or Center links outer ball joint.

In RHD cars with often Holden Power steering the old pitman arm may be used.. or may be the Holden one.. either way.. they don't wear out so unless the bloody tooth fairy came in and lost  yours during the rebuild.. you should never need to ask for one.. but this is what the original looks like. 

GM had various casing numbers on these during 11 years of 2nd gen Firebird production also but primarily all the same.