I want the best engine.. I think the land of the Japanese working man will get my money.. A bit of history.. My Japanese friend said that they hire Chinese in Japanese factories as well as a few Iranians in Japan for dirty work.. It is because that kind of work is beneath them as fruit picking and meat packing and cooking food industries is beneath the average welfare citizen in the US.The difference is they have legal immigration and inspect imports. Please, feel free to recommend a good gas tank replacement for one OR MORE of these engines. Do these engines pump fuel once started or are the gravity fed? Perhaps a standard tank with cut off valves tied into the line system? I want mine to look like this in time without filling 3 or more different tanks. Besides, I will save 60 dollars on gas tanks!! I want it to look like the attached image or something similar but different. I like this stuff a lot.