Hello and Welcome to the forum. The 9th gen will physically take a double DIN headunit - there is enough room - just that it will look odd, because of the finish panel they used on the OEM system.Fortunantely, there are several kit manufacturers that make new single and double DIN install kits for the 9th gen. Here are some example PDFs.
Single DIN Headunit kit
http://documents.victorytechnologies.com//...uct/99-8204.pdf
Double DIN Headunit kit
http://documents.victorytechnologies.com//...uct/99-8204.pdf
Just to make it look like a pro install. Note that I would try dry fitting it first - some people have gotten some kits that did quite fit, and ended up either returning them or modifiying them to fit.
There was a very good install of a DDIN Navi unit here from MSAGRO on a 2007 Corolla. Might want to do a search of that and see if that helps shed some light. Good Luck.
Thanks for the info fishexpo101.
i am glad to hear that there is a possibility that it might fit in my car.
Unfortunately i cant do a dry fit with the pioneer avic-z2 as i have not yet bought it.
Its a pricey unit so i dont want to end up buying it and find out i have to return it because it did not fit.
I really appreciate the links you posted ( BTW the second link is exactly like the first,, you should have had a 95 instead of 99 for the double DIN pdf.. i figured it out with google.)
I also searched the MSAGRO like you suggested and the pictures he posted did give me a good idea of what to expect. and in my opinion it does look pretty good.. might even look better in my car as i have a black interior thus matching the unit a little better
When i finally do get around to buying and installing the pioneer system ill be back with some images.
It might be awhile since its freezing cold outside here in the canadian winters, and my garage is only partially heated.
if you know of any other links to dissasembly/ assembly instructions for electrical components on a corolla that might be of use, feel free to pass them on.
Once again thanks for the info.