You've probably seen this then,
How to remove Door Lock and Assembly Carrier - The Brick-yard
You will need to remove up to the assembly carrier bit.
The door glass is held by two rubberised clamps only, 10mm hex head, at the bottom of the glass.
To get the glass out of a wrecked vehicle(and yours) would require the glass to be lowered to the access points for the clamps.
Edit - Actually thinking on this, if you can't remove the glass with the clamps at the access points, you may need to drop the glass further, with the clamps loose and pushing down on the glass as you lower it.
I haven't replaced a glass myself, so salt and all that.....
Would be easier on a regular manual window winder type, i think, especially in a wreckers yard. If these were even an option in Aus, don't know.
AFAIK, you shouldn't need any seals or other bits.Should be able to be done by one person.
With the door glass out on your van, DO NOT be tempted at any point to use the electric up/down controls.Without any load(weight) the clamps take off very fast.
Good luck.
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