There are several places. I'll get back to you later, got to go. Check the thread from a couple of weeks ago on show your RC boats. It has a great twin cylinder twin engine cat on there from up here in GR. I do not recommend electric due to the run time, recharge time. A single engine gas (not nitro) boat with a gear box and dual drives will look exactly like your cat. Make sure there is a clutch and water pump. If not too modified it will run 50+mph all day and start every time just like a weed whacker. A Zenoah, slightly modified at 26.4cc from several places will do the job. The Quickdraw is better for power but will need a rebuild sooner and be a little more tempermental. Several builders could do the boat for you. A few might do it for cost if they could use it and your big cat in promotional materials. I will get you more information later.