Speakers in rear, Need some help Options

[Anub1s]

I did a search and all of the info that I found was either irrelevant or the pics I needed were out-dated or broken links.

I want to install new speakers in the rear. I am looking into either the 6.5 3-way speakers or 6x9's in the rear dash from Rockford Fosgate. I am doing a complete Rockford Fosgate system with Pioneer deck and so far have the Deck and am getting the sub installed a week from tomorrow. If I buy the 6.5" 3-way speakers will they install easily into the stock mounting place in the panels in the rear or will I have to fab up a bracket for them? And for those like batman with 6"x9" speakers in the rear dash could I see some pics and get some instructions from you as well? Thanks a ton guys.

[Anub1s]

Thanks for all of the input guys. And Thanks a TON for the pics there Batman, I do have questions though.

Do you think it's the same kind of thing for a coupe? I know I can dremel the stuff out but I'm afraid of the stuff underneath there. Do you think there would be any kind of issues I could run into? I haven't looked under neath the backing thing there so I'm not sure.

If its not too hard I will go with the 300 w 3 way 6x9's in the back, my friend has them and I know they sound awesome along with hanving a ton of bass.