Im in the final phases of wiring in a PS1000. All the while assuming you can still set up the drivers independently on these Platinum Sport units.

Do I need any additional driver boxes, or silly resistors?

750cc saturated primaries
1200cc Peak Hold secondaries

 

You either run high impedance or low impedance. Can't mix match unless you run resistors or driver box.

 

Why you do that?

With all great High Impedance/ Saturated injectors that are available why would you choose to run peak and hold injectors?

Running resistors with the peak and hold injectors is not a good solution. you will really change the opening and closing of the injectors impacting not only the amount of dead time, but also the consistency of the dead time from injector to injector. this makes it harder to tune, especially at low pulse width where the dead time is a large portion of the overall pulse width.

I'd suggest looking at other options that are available. There's a variety of configurations of the Bosch EV14 injectors that have the added benefit of having a much better spray pattern.