Re: grounding kits and voltage stabilizers... why?
grounds make a positive difference, whether or not you have upgraded the big 3. The larger the wire, the less resistance to ground, so 0 awg wont hurt anything. I dont understand your question #3... If you swap to 0 awg, is that not the ground update kit you are referring to in the first place? I don't have an opinion on VS, I don't see an immediate benefit, nor do I see a negative on them.
"Freaky like my lady piramid!!!"... MECP Advanced mobile electronics tech, cert # CEA192513-ABYC certified marine electrician-NMEA certified marine electrician, cert #1068-FAA certified in avionics service & installation