I currently have the same boat and if you're wanting to just upgrade the ESC you can spring for a 60 amp goolrc or if you got extra money to burn you can even go with a hobbywing or something like that the motor that you're showing in the photo is the same motor I had in mind but I actually swapped my motor out for the one that comes in the catamaran the atomic catamaran it's the same KJV but it takes more amps and it matches up exactly to the motor mount plate no additional parts needed. I attached some photos at the bottom so you can see also I put a 2968 rocket motor in mine is a 3800 KV with a hundred and 20 amp ESC I had to take out the factory motor mount plate and that thing rips it is crazy fast and honestly it weighs a lot more almost double the original motor but that center wait I think helps hold the boat down at higher speeds. I know the picture quality of the last photo the boat with the current motor in it is not that great because that was and is currently the only photo I have of it now it's been cleaned up and looks a lot nicer but that was the day that I got everything put in it and I took it for a test run if you have any questions let me know I'll get back to you as soon as I can.