Hello all,

Disclaimer: I have no Dodge Grand Caravan...

...but an elderly lady at my church drives one and loves it - she carries her walker and other stuff around in it and I'd like to put at least one running board on it to make it easier for her to get in and out of the vehicle.
I figure you all are the closest I'll find to experts on this topic so I'm skipping all the Googling (or Binging?) and coming straight to you:

Questions:
Stability is key - what are the most stable running boards out there?

Fit: Is interchangeability an issue between years within the same generation

Source - I'd prefer to find some used ones to save a little money - any ideas where to find good ones (I assume Ebay). Or should I skip used and buy new?

Any help would be appreciated. Thanks in advance!