I won't go into the drilled/slotted, OEM vs. aftermarket discussion, as its been done before. BUT, I will say that if your getting new rotors, upgrade to the 302 front rotor size. IPD sells a kit, but you can put it together for much cheaper. You'll need the bracket that uses your stock caliper, but moves it out to accomodate the larger rotor. Same size pads too. The part # is 8602456, Volvo of Houston has them for $69 each, mail order. Bigger rotor, better stopping power! :)