CD Kits:

TBS 4002  4x CD AND IDE CONTROLER CARD
TBS-900   4x CD AND IDE CONTROLER CARD
TBS-930   could have any drive 4,6,8,x 
TBS-6001  6x CD, AND IDE CONTROLER CARD 
TBS-8000  8x CD AND IDE CONTROLER CARD
TBS 8010  8x CD, SOFTWARE,CD AND IDE CONTROLER CARD

The CD kits have shipped with quite a few different drives. 
These include: 

4x (600 KBps sustained transfer)
  Torisan CDR-S1G
  Hitachi 7730 or IPC MCD-242

6x (900 KBps sustained transfer)
  Funai E2650 or NCSA - CD6x
  Teac CD-56e
  Acer CD-625A
  Optical Storage (OTI) Stingray 8322

8x (1200 KBps sustained transfer)
  Acer CD-825A
  NEC CD-1400A
  Optical Storage (OTI) Stingray 8422