Most welcoming... thanks Steve. A simple re-directed without the attitude would have been just fine. Since everyone one has there own take on the subject I figured I reach out to someone who's done it using a e21 driveshaft and LSD.
2joejoe2, I'm in Canada so a 500-600USD shortened shaft isn't so practically once you factor in , shipping/duties/core charges. I'm in the process of rebuilding the transmission and diff and thought I'd get a jump on the driveshaft but maybe It's best to wait and take actual measurements.