> Where can I get the window crank spacers that allow the window
> crank to clear after-market door-mounted speakers?
> With them in place will I be able to mount 4" speakers that have a
> height of 1/4" to 1/2" such as Blaupunkt PCxg402 or JBL DS40? (other
> recommendations entertained).

I don't know of any spacers available.  But you can get high quality front
door speakers that will simply drop in to the stock location and clear the
crank handle, with no modifications at all.  I use a pair of Orions,
relatively high end ($100+ a pair, as I recall) 4-inchers with dome
tweeters, which fit perfectly and sound great.  You will need to use an
aftermarket indash, or an amp, with them to get maximum performance, since
they are significantly less efficient than the stock speakers.  But even
with the stock head unit they are tremendously better than the low-end
speakers that came in the van (albeit more expensive).

- Ron Salmon
 The Bus Depot
 http://www.busdepot.com