These Exhaust products are of premium quality and made to original factory specifications in the USA. All of our products have been test fit on the appropriate Mustang prior to production to ensure a trouble-free installation. We use only the heaviest gauge aluminized tubing available. Mufflers have correct factory brackets when needed and are also aluminized to eliminate early rust out. All Kits are compression bent just like originals for that Concours look. H-Pipes and Hanger kits are sold separately.