Head unit specs/speaker sizes

[WhtCastle]

What are the specifications on the head unit in the Disco I (Tape player with 6disc changer under pass. seat) and what are the speaker sizes for the components?

*edit* And do any companies make a link cable to control the 6 disc changer from an upgraded head unit? I know Alpine does it with some Acuras...

 

[WhtCastle]

Ok well it wouldn't appear there is a direct cable convertor, need to upgrade the changer and/or HU....

 

[WhtCastle]

Can anyone at least confirm speaker sizes or depths? Web sites are all saying different things...