I think you mean, "rebuilt" transmission. (not new?). Based on your use of the van, I'd spend the $2,900. Where can you buy in today's market, a good used van for $2,900. Engine should be good for at least 300,000 miles or more.
Just be sure you have a reputable transmission person, with recommendations do the rebuild.
When was the timing belt changed.
Just be sure you have a reputable transmission person, with recommendations do the rebuild.
When was the timing belt changed.