Haha, I've been looking for the same here in Iowa. The best I can find is through Crutchfield. You can buy it and return it for a 50 restocking fee. I'll probably go with that. Did you just install your 9887? I installed mine about a week ago and I can't seem to get the sound right. Sounds all radio-like with too much emphasis on the mid frequencies. Did you have the same problem?
When using the graphic equalizer, I found it's best if you start by setting the 5th band around 16 or 20 kHz, and then adjust and other bands from there and play around with the Q factor until it sounds right. Mine's still a little off.