922-6807 Order and Tech Line 119 Header Flange Kits Use our header flange kits for ... a pre-made header is not available. On 350 and 400-430-455 Standard and Stage 1 ... flange kits, pre-formed stubs are already ... 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. Part Nos. TA 1825 350, 1-3/4 Header Flange Kit ... 136.00 TA 1825A 350, 1-5/8 Header Flange Kit ... -430-455 Standard Stage 1, 1-7/8 Header Flange Kit ...... $136.00 TA 1826A 400-430-455 ... Standard Stage 1, 2 Header Flange Kit ............ $136.00 TA 1827 400- ... 430-455 Stage 2,3 4, 2 thru 2-1/4 Header Flange Kit ... ..... 90.00 TA 1828 364-401-425 NH Header Flange Kit ...