I tried to post an extensive description before but for some reason, it was blocked. GMPP parts exhaust is actually Magnaflow for $450 for gmpartsdirect.com. Run to buy this exhaust at this price.
GM PART # 12498617
CATEGORY: All
PACK QTY: 1
CORE CHARGE: $0.00
GM LIST: $630.00
OUR PRICE: $458.64
DESCRIPTION: W-body Exhaust Package For use on 1999-2004 Chevrolet Monte Carlo; 2000-2004 Chevrolet Impala; 1997-2003 Pontiac Grand Prix. This replacement exhaust system is constructed with 409 stainless steel tubing and 304 polished stainless steel muffler and tips. Four Inch tips exit under the rear bumper and have adjustable depth to accommodate both stock bumper and ground effects kits. Exhaust adds a throaty rumble while still maintaining a palatable interior noise level. Cars not orginally equipped with dual exhaust will need the dual exhaust conversion kit 12498653 (sold seperately)