I didn't do this yet, but I have all the parts.
This is what you need Mopar part # 82206271. Here's one that's already sold on e bay item #110228832109.
That's what you need if you want to use the factory set up. The factory set up for that year only has a single dvd player. If you have a 4 position cd player, you'll either need to give up the wirelesss headphone option and go with a separately purchased 6 cd/dvd player. Or if you have nothing where the dvd player normally is you can just install the whole kit. That's the only kit that will cover the hole you have in the ceiling. Mostly everything's different from vhs to dvd except the headphones: You need to change the screen & wiring to the screen, but the whole kit would have that.
That kit uses infrared wireless headphones. There was a dealer still selling them on ebay , but they're still quite high.
I know where you can get one for 300.00 plus shippping.
Just thought of another possibility, ... add a dvd player somewhere else, maybe you have the empty cubby hole? or under the seat.. ( depends on if you need to get access to it, or if the kids can do it themselves) if you have space, then you could connect the new dvd player to the rca input jacks to the back of the console... and play dvd through the smaller VHS screen...