Use our header flange kits for fabricating custom headers. Ideal for transplants and other applications were a pre-made header is not available. TA 1825, 1826 and 1828 series flange kits have pre-formed stubs welded to the flange, reducing fabrication time and effort. Flange kits include a LH & RH flange assembly, header gaskets and our 12 point header bolts.