it's a Volvo? wow, I really am lost there. Good luck. If H&R sells a kit then thats probably the best way to go. Don't expect it to do a whole hell of a lot though because of the other things associated with handling, weight, chassis flex, sway bars, etc. It will make the car stiffer and therefore the ride will be stiffer. You can't expect to have factory ride compliance and a "sportier" ride. I doubt an H&R kit for your car will shake your fillings loose but it will not be as "cushy" as stock.