Our tubular manifold has a proprietary 3-dimensional flange design, 11-gage mandrel bends, tig-welded steel, unique support system, and high-temperature ceramic coating. It's very low profile design and complete thermal coating and wrap means you will have very low underhood temperatures. We guarantee the original owner of this manifold that it will not rust through or leak for 3 years, or we will replace it free, as long as it is not modified in any way. kermatdi [ For Off Road Use ]