I absolutely agree that the work put into the box warrants a new or rebuilt engine. Again, I would recommend a swap to a 4.6 but that would probably require too many changes with regard to electronics and wiring hookups.

Good luck to you, WVVan; you have been such an asset to our FTE van community. Note that I am also a (road) bicyclist and the prez of a big bike club in Michigan. Big vans rule for carrying bikes and people and stuff...

George