Diaphragm vs. Borg and Beck.............

This is simple. If you want something for a street car that requires little effort with clutch pedal depression, go diaphragm. If it is more of a race bred build, use a Borg and Beck.
RRR nailed it...Diaphragm does everything fairly well ,on street strip cars.... Think ahead & do your research on the 5.9 Magnum swap,on clutch/flywheel setup...