Anyone have any info on adding an aftermarket stereo and retainign function on the dash display for cd, radio title? And how about adding subwoofers to factory radio? My girlfriend would like me to install her aftermarket system but she likes the 6 disc, and dash display features on her Sport.

check out this web site...
http://peripheralelectronics.com/home.asp

also use : http://www.crutchfield.com
you can use there fitment dealie bob thingy!

I myself want to get an after market NAV because phx. sux and they had nothing to offer!

what I'm looking for is the spec's on the radio DIN thingy...
I don't know how accurate crutchfield currently is.

all i want to do is place an aftermarket in place of the stock radio and retain functionality of the steering wheel controls with the Drivers' Convenience package.

that first link I posted will get you that adapter you're looking for I believe. Even crutchfield might offer it? not sure, haven't checked.

I have changed everything out I will post more pics as soon as i figure out how to do it.