Hey Mark,
I got in on the ipd TME spring/ipd rear sway bar deal. The equipment should arrive 2nd week in January. The springs will only drop the car 5/8" but they are designed to work well with 4C. TME is holding the spring rate secret.
Don't get me wrong. I love my Volvo too but it's more of a love/hate relationship than the SVT Tour was. The inaccessibility of all the computerized systems annoys me. No matter where you you get the springs installed, you probably have to go back to the dealership to have the 4C computer recalibrated. I've got to take mine in Friday to get the climate control reprogrammed. It alternates between hot and cold air when calling for heat. I've got the TNN for it but can't do anything without a $1200 box to communicate with the car.