Ari,
With the DSII, you need a control module of some sort. Either a GM module, or something like and MSD box. MSD is more performance by multispark at low RPMS (it goes to single above 3k RPM or something like that) which helps produce a more complete burn = more available power at a given RPM and more efficiency. The spark is no hotter, as that's a function of the coil.