Originally my 70 RR had a 383 which means that it has the 8 3/4 rear end. Now my car has a 440. I was wondering if anybody else has been in the same situation and what your approach was on your restoration. I did read through some of the other threads on here related to a 8 3/4. Here are a few of my initial questions: 1) I am assuming that the 8 3/4 is sufficient for a 440? I am planning on enjoying my car when finished. Nothing crazy, no drag racing, etc. 2) What is the general rule of thumb on rebuilding a 8 3/4 rear end when restoring? In other words what is the best approach to see if anything needs done to the rear end or not? 3) If I want a good all around setup meaning if I want to cruise down the highway at 70 mph but also have nice acceleration should I change anything with the setup? If anybody has any additional information, thoughts, pictures, etc that would be great. Trying to learn as much as I can now before I get to this point in my restoration.