RE: Tower Hobbies Uproar 40 build
As I recall I was able to press fit a Dubro 8oz tank in mine, not 100% sure but I think that was the one I used. It was all that was ever needed. I also made up top hatches over the tank and used clear plastic from CD boxes so I had a window so I could see how much fuel I had left. I only needed to fill up once for most fun fly events.