whats your favorite diesel pickup
7.3 Navistar IDI for me. Don't care if it is in a Ford or cornbinder chassis. Rock solid engine although I'm not exactly in love with the E4OD behind it in my 89 E350 bus.
5.9 12V Cummins is also a great engine. Not only found in Dodge pickups of course. Lots of ag equipment used them as well as medium sized Ford trucks like the school bus chassis.