I would assume the same......Not that big of a seller.
I'm sure if there was a demand for them, they would have made them.
I just don't ever see many vans towing anything large enough to REQUIRE a diesel. I mean, it's not like you can hook a 5th or a GN to it and most TT's can be hauled just fine by a 1/2 ton gas truck.
The gas 5.9 Magnum was hella stout and would pull just fine. The only thing it wouldn't pull is away from a gas pump.