What engine? Ford contour 2.0L DOHC eng. distributorless ignition are controlled by the main PCM There is an ignition module on the 99 contour 2.0 with automatic transmission. It is shown in the schematics for this model.
The replacement of a muffler on your 1999 Ford Contour should cost approximately $90. Most of the time when the muffler needs to be replaced there are several other exhaust components have will also need to be replaced.