According to MSD's tech line and their current catalog, heres the basic specs:
STREETFIRE: 95 mJ of spark energy @ 10-18 volts, 435 volts- primary voltage. 43,000 volts secondary voltage, 20 degree crank rotation for spark duration. 15,000 rpm max @ 14.4 volts .7A draw per 1000 rpm's. tested with a blaster coil.
DIGITAL 6A AND 6AL: 135-145 mJ of energy per spark @ 10-18 volts. 535 volts - primary voltage 48,000 volts - secondary voltage. 20 degree crank rotation spark duration. 12,500 rpm max @ 14.4 volts. .7A draw per 1000 rpms. Tested with a blaster SS and a blaster HVC