ok so i went looking to find the stuff about installing a new reciever and speakers and such... thing is... i want to install a double DIN setup Pioneer with DVD and GPS touch screen... only problem is... I NEED A BRACKET to get rid of those pesky semi circles i have noticed on my yet to be delivered caliber... also anyone any info on speaker sizes and dimensions. how is the liftgate speaker system powered? does it have it's own power or is it just run off the recievers internal amplification. TELL ME WHAT WILL FIT IN MY CAR i want like best of the best but all Pioneer.