Help Identifying Rear end

[fladoans]

Can anyone identify this rear end?
It is a 12 bolt that I just took it out of my 1969 Camaro. It appears to be a posi and has a 4.11 gear ratio and the mounting flange holes match the std 12 bolt chevy pattern. I am changing brakes and am trying to figure out which WIlwood rear brakes set to order and I can't figure out what type of rear end this is.