There's one on eBay right now.
https://www.ebay.com/itm/117065917416You can see the inboard bolt holes for the intake to heat are broken. One of the bottom ones looks bigger, maybe stripped. Someone proficient in TIG welding aluminum could fix that up, if not making it pretty, at least make sure it's functional.
There's another that's in better shape, but it's a STD, and has a pair of W-1's on it.