Conversion kit for this nice model. I recommend printing the boat as big as possible, since it almost sinks once I use too heavy battery. The bigger boat, the bigger battery you can use, the longer you can float. You'll need 1,2mm carbon rod, SG90 9g servo, CA glue and some connecting screws+nuts. Two coreless DC motors, 20A DC ESC and obviously a reciever. I use 30A DC ESC that can handle 2S li-pol which will give you enough power. Consider using bidirectional ESC!