I’m in the process of purchasing this 92 D-250 automatic 5.9 Cummins. It’s a one owner truck has 225k miles . It has very little to no rust on the body or frame . It will be used to tow my camper and car trailer pulling my demolition derby cars. What’s y’all a opinions and concerns? Any idea on the fuel mileage?? What would y’all suggest to do performance wise to the engine or trans .