From autobahn's blog and recommended by Carl Nelson, I just ordered the Alpine SPS-406. Said to be a perfect fit and it is about as close as you could find. The only slight problem is that the center of the speaker (tweeter?) sits just far enough out that I couldn't quite push the cover all the way in. Very close though, maybe 1/16 in. I think I can carefully route out the area where the speaker ears attach and fix that problem.