will a 6x9's fit?
 

I have a 97 SE, non-bose car. It came with 6.5's, my question is-can i make 6x9's fit? what modifications would i have to do to the parcel shelf for them to fit? I wanna put a set of blaupunkt overdrive biampable 6x9's in the rear parcel shelf.

thanks,
Mike