I need to replace my front rotors. I currently have stock rotors and am thinking about upgrading to a slotted rotor. Is it possible to upgrade to a slotted rotor and keep stock calipers. I have 65,000 miles and do a lot of city driving, however I drive fast and stop quickly. I want to keep my cost down as well. Also could I use nissan pads or should I upgade them as well. Appreciate any advice. Thanks.