I wondered why my ears were hot. One of the older Cummins 10 liter engines would do well in that or a modern ISM series. A N14 or a ISX is a little over kill, fuel mileage and drive line would suffer. How you could get it connected to trans is another story. Anything up to the exhaust filter engines are good. Also series 60 and I think series 50 (smaller displacement) are very good engines also and have their lineage with the 4,6,8,12,16, - 71 engines. Mechanical diesel engines are okay but mileage, parts and finding someone to work on it in a place you are not familiar with could be a problem. That leaves Catapillar, no offense Peter but these I consider to be like a Porsche, they run great but when they break $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ well you get my point, I have had no luck with them even as a company driver I broke down twice as many times in a cat as anything else and I put almost a million miles on my N-14 in my last truck, oh and Cats recon parts system sucks huge ....nevermind. This is my 2 cents I think its a great idea and I am a few years behind you in age and will rent it off you or buy it if you get one/complete one some of the photos of the custom ones are very cool.