Changing motors on a B van is not fun, and I have changed a lot of motors! I'd really have to need that motor and really like the van to go through that much effort.

The motor comes out the front, so the grille, the radiator, the top part of the radiator support, all the stuff bolted onto the motor, the intake manifold, the exhaust, the motor mounts, and the trans needs to be disconnected from the motor. The motor barely fits through the hole it has to come through, and it will have to move forward at least 6' to clear everything on the van. The motor hoist can't be much higher then the top of the valve covers as its lifting the motor up, for the motor to fit through the hole it has to come through. And you get to do that 2x because you need to pull the motor from the other van. Putting the next motor back is as challenging as taking the old one out, maybe even a bit more challenging.

Then, that 89 should be the 1st year of electronic fuel injected, lots of stuff to change over to a carb setup, or lots more stuff to change over to fuel injection. Either way, messing with the wiring will be necessary. Some stuff won't change over very easily (going either way). That 1st couple years of the electronic fuel injection had some issues. Gene