Slant six header plate

grimreaper said

Another option is Hell'sGate Hotrods
Mopar 170,198,225 Slant 6 Exhaust & Intake Flanges, custom, header, dodge | eBay

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That would be better. Not only could you get the exhaust but the intake plates as well. Double the fun! You could technically put a triple Webber set up on that!