Back in that era you could order a Cadillac Calais coupe with a four speed. I've also seen Furies with three-on-the-tree and a slant 6.
Speaking of 3 on the tree and a slant 6, I've been drooling on this...the interior is as new: http://detroit.craigslist.org/mcb/cto/3793164830.html
Holy time-capsule, batman, that thing is nice, and the price is outstanding. I'll never own one of them again, however.