Rear end pinion offset

[67bird]

Tried searching, but am looking to see what everyone is running for pinion offset? For the background I am working on my 1967 Firebird. It is Pontiac Powered, transmission wise I am up in the air between TKO-600 or T56 haven't decided yet, Anyway rearend is the same dilema. I am looking at either a 9" with Torino ends or a 12-bolt with the special ends (Ford ends). Anyway just checking if you are running the factory offset (I think its an inch or 1/2") or just pinion centered. Forgot to mention rear suspension is DSE mini-tub with leafs.