This was just listed on eBay: https://www.ebay.com/itm/Core-2-8L-...391744?hash=item48ca66fa80:g:NMoAAOSwybFc7vsm. While the listing is just for a "rebuildable" carb, it is clearly just designed to advertise that they are parting out a V6. From the photos, it looks like it has stick, so it could be a source for all of the key bits needed for a conversion.