You didn't say what motor you are running. When my rear end went out I used a 72 Coupe de Ville rear end which had 3.08 gears. That proved to be a little tall for the 235 six that I was running at the time. To give you an idea, when I was going down the highway at 65 the speedo indicated about 40. If you already have a V8 you should be fine. I will know for sure in about 6 months once I get the 350 and 2.72 Camaro rear end in mine.
