These have been in storage for decades.  The one smallest one looks like it might have been used before.  But I think the others have not been used.  I don't have the boxes.  The one airtex with the glass bowl kinda looks like early sbc like on the 327s.  Check out the pics good and make sure these are exactly what you need or want before you buy them or bid.  They are sold as is, all sales are final.  They might need rebuilt again just because they have been in storage.