I truly belive that a ground system should be used.
I was having problem back in the late 70's with grounds in my drag cars.
Switching to dual MSD boxes and extra grounds made a big difference.
I'm a firm beliver in ground wires with all the electronics in the newer cars.
Anything you can do to speed up the electronics in you car has to be positive.
The craftsmanship from Gord's (GroundingGear) is first class. The only other thing I added was more grounding to the negative side battery terminal. I have always felt after the installs, a much better tuned and concessive running engine. 150.00 bucks or less for finer tuning.
Go for it.