Small Block Ford Z304 Header Flanges - Our header flanges are precision laser cut from .375 304 stainless. Also fits AFR 205 heads with 3" bolt pattern
Exhaust Adapter, Header Flange to Dual 1-3/4″ | Good Parts
Stainless Works SBF Wide Rectangular Port Header Adapter 304SS Exhaust Flanges 1-7/8in-2in Primaries - HFSBFBTADAPT - Fidanza Performance