Here is another alternative to the Lucid rear speaker location can give you performance similar to that of the S-Pod installation for the price of the speakers alone, and with a lot less labor. I started with a Kenwood Excelon 5.25 midrange and tweeter component set. The midrange went into the standard Lucid

 

Not a great idea if you are concerned about a decent sound stage, but then again either are rear speakers in general.