@Dutch, I have no plans of getting rid of the van but I have concerns that if I get the pump, will the same one work for another vehicle should I need to change? What if I spend that money on that vehicle and something happens then $1400 might be down the drain.
Regarding it slipping into gear that's an interesting point I hadn't thought of. I know that my van will not go into gear from Park unless the brake is applied but from Neutral I think you can just drop it in gear...will have to test that!
I already own the dolly which was about a $1200 purchase about 7 years go. To fully equip my van for 4-wheel down towing, including the oil pump, I would need to get the tow bar and bracket as well as the brake buddy. The cost would be in the neighborhood of $3600 installed and so when I add the numbers I wonder if its worth the effort! That's a lot of money for convenience!