theres clips on the inside of the hood. look inside the hood and you will see em. i took my rear panel without taking out the side panels and it sucked balls cause you have to bend it and put pressure on it. if you take out the side panels it will be a lot easier....however the whole job took me about 1 hour. i didnt buy a harness for the speakers...i just cut the harness out of the stock cables so i would have bare wire and connected them to the speakers...really simple....oh...if you dont take out the side panel....youll prob break a clip or so from the rear panel but thats ok...i did but its no biggie.
EDIT: i meant trunk not hood.