Doh! I missed the 'to' in 'upgrade to the Factory CD'. I couldn't imagine that anyone would actually want to do that eek , so I read right over it.

1999 Contour SE Sport MTX75 T-Red/Grey
Audio: Pioneer DEH-7400MP (MP3 CD), Pioneer TS-A6857 front & rear, PPI PCX-250, Infinity Perfect 10.1
Other: cup holders, cargo net, Blizzaks, Potenza RE950s