So, I made my own grounding kit. I used 00 gauge military grade grounding strap to go from the battery to the engine bay chassis . That supports over 85A, so I figured that would be an nice low inductance path for ground. Then I used 4 Gauge Tsunami de-oxygenated power wire from the chassis to the engine (both sides) and 8 gauge from the chassis to the throttle bodies. I used one of my Negative terminal battery blocks to attach the grounding strap and stock ground wire to the negative terminal. Works really well. Not sure I actually notice any difference in anything.