The guys at CVZ have had a couple in the shop, they don't sound super great on the board, but, hey, nothing really does. Now, in car, sealed, they are champs if you like SQ. The Perfect pwns it in output and SQ, but the Kappas aren't shabby performers. Small sealed, and DON'T FEED THEM MUCH MORE THAN RMS STATES!!! The Kappa's and Perfect's both hate power in the factory boxes. If you can provide accurate T/S specs, I'll whip up a box suggestion and dimensions, or, if you want a ported box, I'll throw it into Decaf's calc and send you a cut list. But that's all up to you.
Morgan