Congratulations on your win. You never know which one the judges will like the best; The last show I went to, the car that I thought was my best didn't do anything, but the other car that I was talked into bringing by my family took First. It gos to show, you just never know. Again, congrats.
John, Not really, they set up you have required lots of air to cool down the radiator, withit inside the "cabin" it wouldn't get enough air to do the job. The simplest this would be to use "sea" water to cool it down. Here is a link showing how they are set up. hope this helps. https://images.search.yahoo.com/search/images;_ylt=A0LEVzQala5UcLUAIwhXNyoA;_ylu=X3oDMTB0dGk4YnBxBHNlYwNzYwRjb2xvA2JmMQR2dGlkA1ZJUDU2NV8x?_adv_prop=image&fr=moz2-ytff-yff34&va=marine+engine+cooling+system Love the dual rudders.
Love the whole thing, great design, however, not to rain on your paraide, but there would not be a fan on a boat engine, boats use water cooled engines, either via "closed" systems using an "inercooler" or flow thru cooling using "sea" water that in pumped thru the engine thus cooling it down. But the whole comcept of using the vette body for the "cabin" is great, and seeing some of your earlier work, I know this will be fantastic!
Sorry to hear about the water heater. Your car is out of the park, what you have done on this is just out of this world.
Now back to the water heater. I assume you have a standard tank type. You might check out the tank-less type. They are a bit more pricey, they wind up saving more money in the long run, because you are not spending money contentiously heating up the tank of water. With a tank-less type you only heat up what you actually use. Just my $.02. Again you work on the cat is spectacular.