LC Engineering sells stainless tubing for your project. 409 is the most inexpensive and available stainless steel in the 400 series. It is suitable for normally aspirated header applications and has been successfully used by many racing teams. It does not have the high-temperature fatigue resistance that 321 does, but is considerably less costly and much more available. This is the same grade of stainless steel that we use to build all of our street and pro headers. "J" bends feature one 6" leg, one 12" leg, and a mandrel-bent 6" bend radius.
NOTE: 409 Stainless Steel / .065" Wall.
Contact our Tech Support Line for further information at 928-575-2174.