A Sedan taillight will not fit on a Coupe. They're not even close to being the right size.
The only taillight options for 1995-2002 Sunfire Coupes are the APC Retro 3D taillights, custom taillights, or doing a '03+ rear end swap and then getting the TYC taillights.
The taillight options for 2003-2005 Sunfire Coupes are the TYC taillights.