Flowmaster introduces their new manifold downpipe system for the 1968-1974 Chevrolet Corvette with 327 and 350 V8 engines and automatic transmissions. These 2.25" mandrel bent pipes include factory style 3-bolt flanges, donut gaskets and mounting system for an easy installation. Constructed in durable 409S stainless steel, the pipes are covered by Flowmaster's Lifetime Limited Warranty. For manual transmissions use part # 81098.