Our stainless steel exhaust systems offer excellent quality and value. Critical bends are mandrel bent, so the bore diameter stays constant and doesn't form power-robbing reductions at the point of each bend. Mufflers are constructed to original designs, but the internals employ modern materials and manufacturing methods. Stainless exhaust systems make perfect sense for classic and soon-to-be-classic Jaguars as they are an install-and-forget item. Highly recommended. Lifetime corrosion warranty to the original buyer.Note: Exhaust systems are not supplied with mounts, clamps or seals.