You also have to be aware if you have power or manual windows.
Manual windows offer even less clearance.

I mounted Polk 5 1/4" coax speakers in the stock location and they just fit and clear the dash.
I cut the vapor barrier, but used aftermarket XTC foam speaker baffles. I was able to cut the overhead A/C Westy box and put 6 1/2" speakers in the back.

Todd
'88 Westy

-------------- Original message --------------
From: Kim Brennan <kimbrennan@MAC.COM>

> You are dealing with 2 problems in the stock location.
>
> Depth of the speaker inside the door. And Height of the speaker above
> the door panel.
>
> Anything more than flush mounted speakers, will hit the side of the
> dash. Anything more than about 2 1/2 inches deep, will require you to
> cut the vapor barrier pocket.
>
> With that said, a previous owner did fit some 5 or 5 1/2 inch speaker
> in my passenger syncro. As they aren't flush mounted they hit the
> dash. I wish they had gotten MB Quarts and flush mounted them instead.
>
>
> On Sep 3, 2008, at 4:16 PM, Robert MacDowell wrote:
>
> > What's the biggest speaker i can get into the same area as the
> > factory installed. I'm thinking 5 1/4 inch would be the biggest.
> > That's if i can even get those in. What's the opinion of the
> > experts. I don't want to cut the bottom of the door panel. I already
> > have them on the old panels and don't want to do that on the new
> > ones. Thanks