Accurate LTD has mastered these difficult exhaust systems and has been a leader in consistant manufacturing techniques that insure perfect fitting exhaust components. Whether you are restoring a small block a-body or a pavement pounding big block , you can count on Accurate LTD for exhaust products and tech advice unmatched by anyone. * * Now available in a 318 dual exhaust conversion kit. The 318 conversion kit includes a hanger floor pan bracket (#ACC4001) for the passenger side.