I did not get a driveshaft when I bought my 71 Roadrunner sunroof car a few years back. I have a 383, 3 speed manual (D-13) car, and need info on what specs my driveshaft should have. Rear end is 8 3/4 If anybody has a book or knows where I can find this info, I would greatly appreciate the help. Thanks, Greg ffgreg32@aol.com