Features. converters have a ribbed body that minimizes expansion distortion when the converter heats up and converters are seam welded close to the converter body for a strong tight bond. converters have a 12 in. lap-joint where the necks meet the body. The neck does not extend into the converter body where it could hamper exhaust flow. Separate dies on different sized inlets. We dont skimp by putting larger neck sizes on smaller bodies. This would reduce the flow of the converter and performance of our product. uses a monolithic honeycomb catalyst. The ceramic is designed for maximum flow and surface area. The coating method is strictly controlled to maintain exact specifications. uses a heavier gauge stainless steel tip to tip. Others use mixed weights and materials. uses an aluminized or stainless OEM-style ribbed heat shield that creates a rigid wall of protection against heat and adds to the structural stability of the converter. installs a factory capped 90 degree air tube on with air converters. This saves time during installation. Case Material - Stainless Steel. Inlet Size - 2-12 in.. Inlet Attachment - Slip-Fit. Outlet Size - 2-12 in.. Outlet Attachment - Slip-Fit. Shape - Oval. Body Length - 11 in.. Overall Length - 15 in.. Substrate Material - Ceramic. Fits for various make model