I see you've been "ignored" so I'll give you my experience with Patriot headers. They make nice parts and some not so nice, I bought a set of ceramic SBC headers for a '32 Ford that were VERY nice....16 ga. tubes and 3/8" flanges, the fit was perfect. I also bought a set of uncoated headers for a 500 Cadillac in a '32 Ford.....TERRIBLE welding and they didn't fit. The end port bolt holes didn't line up with the heads and the collectors hit the oil pan. They were sent back.
The fitment issue is up to you, I would call Pertronix (parent company) and get transferred to Patriot, I would think that their "tech" could advise you. Make sure you tell them that you want the 3/8 flanges though because they make both 5/16 and 3/8.