i've got the deck where the stock radio was right now, fits perfectly. however, if i were to place where the double din opening is it would be a little less visible, so i wouldn't have to worry about taking the faceplate off and carrying it with me.
http://www.cardomain.com/item/SCOTGN2100B
that is actually exactly what I need, and it's for my generation of corolla as well. only this is $16USD shipping to me. trying to find a retailer in canada that might have it.