I have a cat hull 45" RC boat with a direct drive modded Zenoah water cooled engine. This boat is like a rocket! The full mod was done by the previous owner. I'm not into racing, and I've only taken her out one time since I sold my big boat! You will NOT be disappointed. The previous owner said it did almost 65mph. IDK as I never GPS'ed it. However, my big boat which topped out at 45mph could not keep up with it! At slightly over half throttle on the Tx, the big boat (Hydrosport 2200WA w/ 200hp outbd) was pacing it! I could leave the big boat easily in its wake with a slight tug on the Tx!!!