I had planned to put a CDROM in my dashboard and attach it to the PC in the trunk. I found out that IDE cables can stretch only about 5' at most before dataloss becomes too great. You can buy premade 4' cables, but don't try to go longer. I think SCSI can go up to 6', but not sure. I ended up buying an equalizer at Radio Shack that had a CD input on the front so I could just plug my discman into that.
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The Impee3 Car Player