Which rear set-up?

[1969Crossram]

What are you using the car for? Why not consider a 12 bolt? This camaro belongs to a friend of mine and he runs in the high 8's. 12 bolt has held just fine. I hear people all the time just assume they need a 9". In most cases, will people really need or use the added benefits of a 9". 12 bolts look great under a camaro. Just my two cents, not that is means anything. Different strokes for different folks. In the end, the most important thing is you are comfortable with what you choose. Can't go wrong with any of them. I would however put the Dana at the bottom of my list. Very heavy rear.