"the gas powered spryte I looked at in oneida NY last summer had fuel data that suggested about 4+gph gas 300 automatic 8' drag. hilly trails. "
I was hoping others would chime in on this Redsqwrl. Unless I am mistaken with where you were heading with your post. After working on diesel engines most of my life, there is definitely a need for a diesel, WHEN ACTUALLY WORKING THE MACHINE HARD. In a snowcat MPO is I guess if you have the coin to throw away that's great. I think gasers are way too overlooked. I ran many Ford 300 in my poorer years and have always been very impressed. Many years ago I had the intentions of restoring an old powerwagon. At the time I was going to put in the Cummings 4tb (?) After doing a lot of homework at looking very closely at the specs, a person would be crazy to spend 3-4 times the $ to do so. Those Ford 300 are very impressive if set up correctly. Apples to apples I'd take the 300 anyday but I was not planning on really working the powerwagon. Just a toy. As I said though the 300 needs to be set up correctly. Trans, gearing, etc.