dana 60 - 70

I guess that could be the date, as trying to lay a tape next to the ring I got about 10" which is closer to a 60. There's also D35 stamped on the face of the spool towards the open side of the case. If I pull the spool to get a better measurement can I just bolt it back in or will it need setup again?

Anyone got any inside dimensions for a 60 or 70 housing where the ring gear fits?

Should I also be able to just pull the axles after removing the 4 backing plate bolts?
thanks