Availability of Slotted and/or Drilled rotors
DBA rotors are now available in the USA (the last post regarding these was 2004). They have a few options for the Elantra at least. I have not investigated all the other models. The Tiburon is usually the first one it is made for, so we have gotten beyond the first stage of interest. After browsing the webpage and investigating the tech, I am more inclined to use these rotors than Brembo's. (I can't get the two piece rotors, but I can't from Brembo either)
Brembo should have slotted or drilled Sport replacement rotors for the front at least on an Elantra (and Tib). The rear may not be available factory from Brembo, but I have such a hard time finding what I need to know on the Brembo webpages, that I may end up calling the 1-800 number to find out all the part numbers and slotted/drilled availabilities. Then I will have something to work with when I call a retailer. Even the catalog is a few years old on the Brembo webpage.