Dynatech's new SuperMAXX exhaust systems for Chevy/GMC trucks and SUVs are engineered for a direct bolt-on fit, are fully OBD-II compatible, and retain all emission connections. These precision-- crafted, complete header exhaust systems feature CNC mandrel bent long tube headers, dual stainless-steel hi-flow cats, and NASCAR-style 2-1 racing merge Ys. All SuperMAXX systems use stainless steel materials throughout and aerospace T-304 polished stainless header tubing. Recent dyno testing showed improved stump pulling torque and 17 more rear-wheel horsepower on 5.3L engines. One system fits '00-'03, 4.6L and 5.3L, two- and four-- wheel drive, Chevy Silverado/GMC Sierra 1500 pick-ups, Avalanche, Suburban, and Tahoe/Yukon. For information, callDynatech, (800) 848-5850, or log on to www.dynatechheaders.com.