Too dark outside!!!! Yeah, I am sitting on the couch at 11:00pm wondering if the rearend is a posi or not. I will have to wait until the morning to check. The rear in the 67 Sedan is supposed to be a posi, but I haven't checked. I have a non-posi rear in the wagon and want to swap the posi rear into it. I will probably swap to 4.11s before putting the rear in, though. Eventually the wagon will get a 9", but I have a ways to go on the 66 I am doing and have a CR front clip, a spare 6.0 LS1, and a T56 itching to go into the wagon so I can drive it, patina-style! I am going crazy with this warm weather wanting to drive something.