the dt360 and 444e are internationals diesel babies the dt360 is a massive industrial straight 6. The 444e is the famous Ford 7.3 powerstroke. Still made by International. Ford never had a diesel worthy of their f250 and up trucks. So they contracted International to bring them a badass engine. It started out with the 6.9 v8 and evolved into the 7.3idi and then to the 7.3 direct inject. Then when Ford guessed wrong that the 7.3 wouldnt pass new 2002 emission regulations they asked for International's 6.0. The 6.0 had some breathing problems but shouldnt be taken lightly. In a Scout it would still put out 330hp and 500-600ft/lbs of torque. Anyway with things going bad between Ford and navistar the last real diesel Ford ever saw from International was the maxxforce7 branded in the Ford trucks as the 6.4 powerstroke. Yes 6.4l the same as the old skool 392v8 just 389ci now and just in diesel form now. Now maxxforce engines cost alot but they can be sold to anyone regardless of emission requirements. Navistar just has to pay a small fine of like 1300$ which is reflected in the price. Now that Ford is making its own crappy powerstroke the 6.7 with a world class leading 800ft/lbs of useless torque in an aluminum block instead of navistars cgi block the engine is seeing early wear and engine fatigue as well as the quick failure of injectors and exhaust gasses reaching unsafe temps. So any of the maxxforce engines would work in a Scout. Cause baby its gotta be International in my books or nothing. Navistar has never strayed far from its original cubic inch numbers. They make a maxxforce3.2 inline 4. Yes the same liters as the old 196 slant 4.
But all in all your best bet for plopping a good engine in there would be either a 7.3 from a Ford or International or a 6.0 from a Ford.
Yes I rant on fords stupidity to not continue on with proven industrial power but its because I would never sacrifice the miles I can put on a red block for a few more ponies.
I drove my f250 for many years and finally when I was done with it I super chipped it and roasted those tires into nothing. Now its still being used as a farm truck. Sleeves and rings were finally replaced at 525k