The 1968 Corvette Exhaust systems for the small block high performance made use of a  welded in 2″ section on each of the front pipes the original Corvette pipes we have do not have relief bends in the head pipes but do have relief bends in the rear pipes. . Our kits come 14 ga aluminized with the correct front pipes, correct flanges, extensions, donuts, sealant, guillotine clamps, mufflers, installation instructions and diagrams. Reproduction muffler hangers are available as well as heat riser and stud kit. Our system comes with flats in the rear pipes as original and guillotine clamps for center exhaust hanger but opened style clamps for tips. Ask about our concourse show package for the hobbiest who can’t stand surface rust.