If your keeping the stock Bose amps, speakers & sub, you'll need the Metra wire harness adapter part # 70-1725. Also the cleanest looking dash kit I've seen so far is the one from American International. Check the audio section for the DIY.....this has been covered a million times.
doesnt the crsx store have the needed parts to get this install? i know they have that piece for double din unit and i think some extra wires to hook it up. im not all that in sound system so i dont know much, anyway good luck with the install man