PIE adapters:
for the 01 SCREW- FRDR-AUX
for the 98 crown vic- FRDN-AUX
for the 05 expy- FRD04-AUX
check them out
here
the only thing is that these don't charge your Ipod, at least I don't remember if all 3 don't, but it's a start for you to check out.
BTW your stereo must have the AUX button for these to work
