At this point, I now committed to the car. I replaced the rear shocks, bought a fender for $65 to replace the one the got crushed when the van fell to the pavement, and am going to replace the inner and outer tie rod ends. It would be easy to walk away from the van if it wasn't reliable or ran poorly, but it still runs great - I took it on a 1000 mile round trip this past weekend with no problems.
I'll do the tie rods myself, but not the rack and pinion (I read the write-up someone did on this forum. Sounds like a real undertaking). The cost of a shop to do the rack and pinion is more than I want to spend, so for now I will just watch the fluid, and probably add sealer as was suggested. I really do not lose that much fluid now, anyway. I guess if the leak becomes severe, then it will be time to make a decision.
Rust, road salt, and unrepaired collision damage have taken their toll on the body, but mechanically the van is still pretty sound. Two years ago I could not get the car to pass emissions - the check engine light was lit, and it was going to take what was estimated at an almost $1000 catalytic converter and some other parts to get the van to pass. I was not going to put $1000 into a high mileage body damaged van, so we bought a replacement low-mileage 2007 and figured the 2005 van was finished. Two days before the plates were due to expire, the check engine light in the 2005 van, which had been lit on for almost a year, suddenly turns off with no intervention on my part. I go directly to the emission testing center, the van passes, and 20 miles later the light comes back on (the code again indicating the catalytic converter needs to be replaced). I drive the van with the check engine light on for two more years. This past June, when the van is again due for emission testing, I figure the time has finally come where we will part ways, because I am not going buy a replacement catalytic converter. But just like two years ago, a couple of days before the plates expire, the check engine light goes out, I take it to the testing center and it passes. If only it could self-repair its rust and body damage!