I'm just starting to put back together a 67 Camaro that my son and I stripped completely down. We're going to be putting back in the 327 rebuilt to about 350 HP. We currently only have the original 10 bolt non posi. Not knowing anything but enough to get me in trouble, I think this is way to much power for the rear end. I've been looking to replace with a 12 bolt posi, but all I keep seeing is $1300. I hear a lot about the Ford 9" posi as a cheaper replacement. (I went to the currieenterprises web site, but got lost with 9+ unit) Any input from someone on this? If I did go to a 12 bolt posi, what would be a good gearing for just around town driver that I can stomp on every once in a while? Could I just put a 10 bolt posi in this housing and would it hold up? Thanks for any help for this novice.