looksstock said:mrmack - The PDX-5 is awesome..it kicks the sub hard. I can't take the volume past 85% for fear of blowing the sub (although I've been told by circuit city that shouldn't happen).
I only put Kappa's in the front, so I used the stock tweeter location (replacing the JBLs).
The quarts work just fine for the rears - and since I'm never in the rear, spending the extra $ wasn't a priority.
Good luck, let us know how yours turns out.