Thanks for the reply tommy. At the moment I have the stock rotors on the car and after last season at the track I noticed that they are starting to crack, so it is time for some slotted only discs. I thought I would put it out there if anyone had tried the DBA's so I could get some feedback, as I think I will go with the 5000 front and 4000 rears for next track season. Still go time to think about it but at the end of the day, my as well buy quality and then there is less to worry about. I am using the Hawk pads and they work great, so I will stick with those......Thanks again