radios in toyotas have a keypress combination that changes the frequency steps from 100.0 102.0 in even steps to 101.0 101.9 102.7 103.5 odd steps
but don't change the frequency band, japanese radio is a lower band of frequencies
the convertors arent worth it, everything displays wrong on the front panel, all the stations end up close together and there is crossover
the local dealers may have a Aus radio with the same faceplate
wreckers
aftermarket