I would not swap OEM window regulators for the sake of better speakers. Most aftermarket power window kits that I have seen are junk compared to the original factory hardware. Factory ones can fail, but in reality are usually the best and the only ones designed specifically for your van.

Mark

Need some help from the Stereo Experts here, I need to do a major stereo
upgrade to the stock system.

The Van is an 89 Auto Carat with Power Windows.

? I was told by Vanagain that I need to replace the stock power window
regulators and motors with aftermarket units they sell to put big speakers
in the lower section of the door panel, is this correct?

? Is there any way around that?
They cost $140 each set of Motor & regulator, so a that means $280 total
just for that.

I am looking to hack the van�s driver and passenger doors and place the
largest speaker as possible in there for good sound as well as possibly cut
an opening in the rear where the current stock units are.

Here�s the locations I have considered:

Front:
The drivers side & pass side doors,  - Lower area

Possible mini-tweeter on dash

Rear:

On the left and right sides of the rear heater core unit, have an all
natural wood piece there made by the previous owner, look great too and
thought it might give good sound to the front from there.

A thought to replace the rear stock speakers that in the air conditioning
top housing with larger speakers, just don�t know how large would fit in
that area if I had it opened to a larger size.

I am mostly looking to get get great sound upfront with crisp frequencies
and deep tight bass with a loudness level that will be heard well while
doing 75mph with the windows open.

I open to all and any reasonable suggestions.

I would like to spend no more than $700 dollars if possible not including
the power window motor and reg. Replacements.

Thanks to all in advance.
Robert
NYC