Ignition Barrel Question? Hr31, Aussie R31 Interchangeable?

[HR31-PASSAGE]

so my ignition barrel is broken, causing the plugs not getting spark, so my question is: are aussie r31 ignition barrels interchangeable on the hr31 passage or the little swich on the back also???

cheers guys

[HR31-PASSAGE]

so my ignition barrel is broken, causing the plugs not getting spark, so my question is: are aussie r31 ignition barrels interchangeable on the hr31 passage or the little swich on the back also???

or is the vl commodore barrel the same???

cheers guys