Wind noise can be somewhat lessened as well in pre-1988 vans by
changing the front door seals and swapping in 1988 and up rear vented
windows:

http://www.gowesty.com/flow-thru_ventilation.html

I have the stock 1988 and up rear windows for sale if anyone is interested.

Chris

On 10/18/06, neil <goofymuso@yahoo.ca> wrote:
> Hey this is all great info!
>
> Don't know what part of van I'll tackle first, (likely
> slider and hatch) but just having some direction on
> material types and links to web pages with info is a
> great help.
>
> It seems that a combination of undercoating and
> installation of proper material in all the "tin cans"
> of reverberation will make a big diff. Of course
> nothing will help the wind noise..... other than some
> kind of noise cancellation sound waves --- ;^)
>
> Thanks!
>
>
>
> Neil Nicholson.
> 1981 Air Cooled Westfalia.
>
> http://web.mac.com/tubaneil
>
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