just installed sony 1621's.....wow!
 

These speakers rock! Install was easy using Lucid's detailed instructions...Thanks Lucid! The door and lock connectors were stubborn so I just left the panel attached while installing the speakers. 30 mins total. You can get the speaker harnesses at Best Buy for 6 bucks a pair. Great upgrade. Now for the new head unit and SWI-X....:)

Go for a sony HU, and use the Lucid/Modifry Sony DCI, it's hardwired. No delays, no IR. Adds speed sensitive volume (if you want it.)