Lead, $900? https://detroit.craigslist.org/wyn/pts/d/dearborn-ci-buick-oem-dual-quad-intake/7036455804.html
It's also on eBay. Let's see what bidders think it's really worth. I'll guess $590.... https://www.ebay.com/itm/Buick-425c...265483&hash=item36598f3182:g:dAAAAOSwKAFd75f0
Several years ago I sold a B 262 dual quad aluminum manifold for $550 and thought that was outrages ? ha