C5 what fits in the dash? Double din? 1.5?
 

I'm planning on replacing entire sterio, and want to get a good signal processor. Will a full din sized processor fit the c5 (in addition to the cd/receiver din)? I'm considering something like the pioneer deq-p9 dex-p9 combo. I've also seen some 1/2 din processors if a full din processor won't fit.

we have a 1.5 din opening, but many drop the a/c control below to the ashtray area and that will open up enough area for another full sized din unit.