If you use the TK7 or any of the other TK units from heng long, you won't be able to use your radio, you'll have to get the controller that goes with the board. If you go with the Clark TK40 then you can use your radio but you will need the receiver and you need the one matched to that radio. As for swapping it out, you'll need to trace the wires from the individual function units. Figure out which wires are for the elevation unit, which wires are for the turret rotation motor, etc, etc.