Nuclearun

So I'm working designing my new PC after ~7 years. I'm greatly enamored with the Core P3/5/7 series cases by thermaltake but... I can't seem to figure out whether any of them will support a disk drive of some sort, specifically a blue ray drive. It might be more truthful to say that I suspect that none of them have any specific place for one. Am I missing something obvious? Can I just place one on the side/back what-have-you where one of the many SSDD or HDD's would go? (I'm also digging around to see if I can find a 3.5" blue ray drive but no luck so far). Any help would be greatly appreciated as this is kind of a major breaking point on a case for me. I suppose it's possible to get an external player/drive but I'm against it as past experience has given me a huge distaste for external cd/dvd readers.