Are all 12" PowerBook G4 keyboards interchangeable?

Rick, from the numbers you provided the keyboard kit has a part number of 076-0982. Here is the compatibility of that:

Powerbook G4 Aluminum 12.1" 1.0GHz G4 (A1010) - Mid 2003 M9007LL/A

M9008LL/A

Powerbook G4 Aluminum 12.1" 1.33GHz G4 (A1010) - Mid 2004 M9183LL/A

M9184LL/A

Powerbook G4 Aluminum 12.1" 1.5GHz G4 (A1104) - Early 2005 M9690LL/A

M9691LL/A

Powerbook G4 Aluminum 12.1" 867MHz G4 (A1010) - Early 2003 M8760LL/A

Powerbook G4 Aluminum 15.2" 1.0GHz G4 (A1046) - Mid 2003 M8980LL/A

Powerbook G4 Aluminum 15.2" 1.25GHz G4 (A1046) - Mid 2003 M8981LL/A

Powerbook G4 Aluminum 15.2" 1.33GHz G4 (A1095) - Mid 2004 M9421LL/A

Powerbook G4 Aluminum 15.2" 1.5GHz G4 (A1095) - Mid 2004 M9422LL/A

Powerbook G4 Aluminum 15.2" 1.5GHz G4 (A1106) - Early 2005 M9676LL/A

Powerbook G4 Aluminum 15.2" 1.67GHz G4 (A1106) - Early 2005 M9677LL/A

Powerbook G4 Aluminum 17" 1.0GHz G4 (A1013) - Early 2003 M8793LL/A

Powerbook G4 Aluminum 17" 1.33GHz G4 (A1052) - Mid 2003 M9110LL/A

Powerbook G4 Aluminum 17" 1.5GHz G4 (A1085) - Mid 2004 M9462LL/A

Powerbook G4 Aluminum 17" 1.67GHz G4 (A1107) - Early 2005 M9689LL/A

Powerbook G4 Aluminum 17" 1.67GHz G4 (A1139) - Late 2005 M9970LL/A

Information is from here. I am not a Mac expert, nor do I pretend to be one. Hope this helps, good luck.