SAAC 34? That was a while back.
http://www.legendarymotorcar.com/inventory/1970-ford-mustang-boss-429-1898.aspx
I'm not knowledgeable on Boss 429s - is that really how the overspray should look on the belly?
Boss9 floors the same as Any floors from that year on a Big Block built at that assembly plant
And take into account variables in slop paint etc