Hot Rods Headers for my 1939 Pontiac straight 8

I want to get dual exhuast on my 1939 Pontiac 8 Convertible and can't find them any body know who sells them. Any help would be appreciated

 

You'll have to split the manifold or build your own headers.

 

What he said^^^^^.

 

Damn I talked to my muffler guy but he has never split one of these before!! It it the same as the Chevy manifolds?

 

Thanks guys forbur help