you might also conside some early chevy exhaust... mine work well,, I am not that crazy about headers.. had them on two vehicles and I cant see that much more performance... they do put out some extra heat in your cab..

here is a pix of mine but I did not get a good shot of the manifold.
see here
I thought you had a 327 in yours

Redryder pix
My Hotrod
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