FS: 340 Hi Po manifolds

I have a set that is in excellent condition. No cracks or problems. no deep pits, just surface rust. The heat riser operates smoothly. I've had them in the attic for about 10 years, and don't remember how I even got a hold of them. By the looks of it, these manifolds were removed very early in life and have been sitting since. I could be wrong, but it looks like a factory assembly line mark on the top of the one manifold - although, I can not confirm that. Take a look at the pics. Asking $400 plus shipping.

Thanks!