I got a good deal on a 10 bolt posi for my 67 chevelle i was told it came out of a late 60's camaro and i found out that it doesnt bolt up the same.So i was wondering if i could swap out the insides with my 10 bolt non posi and what exactly would i have to do.Thanks Tom:confused:

First things first.
It would need to be the same series as your current one to work with your existing gear set.
What gear ratios do both have?

If you are swaping all of the internal parts then yes they will work. You will have to set the pinion depth, bearing preload and backlash. If you have a '67 Chevelle rear end and this is a '67 to '69 Camaro rear end then the axles will also work. If you only want to swap the posi then you need to do what Mike said.