350 HP ICE vs. 350 HP Diesel?

OK........Gas-Diesel. What we want is a amount of work done, in a short amount of time, right? Most of us can do 10,000 hp of work, if given enough time. But we want it NOW. Look at same displacement size gas and diesel engines. They are not the same weight or size. The diesel is much heaver, and larger, because it has to be to live while producing the required power. Can a smaller engine do the same amount of work as a large one, sure, but you must either take more time to do it, or consume more fuel to do the same work. Then you must increase the structural size of the smaller engine to produce the required power, and still give an acceptable longevity. Remember the old saying, "there is not substitute for cubic inches". Its the same for gas or diesel. Dead Bang! Someone mentioned the Ford 537 CI engine as a MH engine. The reason that ford quit making it is it was not dependable. The machine shop I usually used, had a lot of these engines go through the shop. I asked if this would make a good hot rod engine, and was told it doesn't even make a good boat anchor. It was to be a good suburban truck engine, but it didn't hold up at all, and was very expensive to rebuild. For those poking Davenet, I would not poke the Bear, as you do not know what his MH weights, or what his engine can, and will do. Just say-in.