These are the factory sized mufflers found on single and dual exhaust A-body cars. The case lengths are 18" and sound close to the factory originals.
Warranty: Accurate Exhaust Products warranties mufflers for workmanship and materials only. Sound level and exhaust note are not warrantied as each car can be designed different in cam profile , induction and other factors. Backfires can cause the muffler to be damaged as this is the weakest link in the exhaust system and are not covered by warranty. Damage caused by internal or external corrosion of any exhaust component including mufflers is not covered by warranty. Acidic moisture caused by modern fuels and short engine runs is known to corrode and damage exhaust components from the inside out even with the best of materials.