Well for a couple of reasons, I'm now leaning toward dual Honda 2200 + 2200 companion. And the Berg dual gen fuel system. The reduced weight is a big factor plus you actually get more power from this setup. The Berg system is pricey at $199 but is a turn-key system that has a good track record. I have an old marine fuel tank but I'm not sure how well it would work, I haven't used it for many years. I probably will order all this from Northern Tools. We don't have a store near but I think they are scattered around the country.