Where can I get a RH ramhorn exhaust manifold?

[flyngti]

When I was tearing down the 307 in my '69 GMC, I found one of the exhaust manifold bolts rusted solid in the manifold. Not just a little solid -- A LOT solid. I tried heating, cooling, soaking, drilling, grinding, praying...nothing worked. In the end, I broke the manifold in half and spun the entire thing around to unbolt it from the head. Needless to say, I need another exhaust manifold now.

Anyone know who sells these things? I can't read the casting number because it's so rusted. It's the passenger's side manifold with an angled outlet.

Oh, and before anyone says "just install headers," I started down this road. I had a cheapo set of headers from a donor car. The driver's side ended up being cracked and the metal was so thin I couldn't weld it shut so I put the ram horn back on that side. The RH side has a header, but one of the tubes comes really close to a hard brake line and I don't want to relocate anything. I'm already set up exhaust manifold back and I'm not looking to redo it. This is not a high power motor so stock manifolds are fine.

Thanks!