Here are a selection of Grant II audio tests. You will hear a normal Grant II and then the modified Grant II on FM also with the internal echo board from Intek as per the original Kucha Hans Jackson II.
There was a betting game how long it would take for Kucha to make the mods to the radio. And sure he has the no wire cut no jumper moved export mod also.
I don’t know the price, don’t know how long it takes so please don’t ask me and the video is shown here as an illustration of what can be done with the radio on the FM side to make the audio stronger.