I have seen several distor block kits too. Honestly I don't see the damn difference. If the car in some way was able to generate enough eletrical current to over power a 4 guage wire tht would be one thing, but it can't come close. the big thing is to make connections that will allow for better current flow from anywhere in the engine bay to the battery and have it remain that way for a long time. An uncovered distro block will carode as will an open wire terminal, which is why I use only weather sealing shrink wrap and closed ended terminals.
I have never heard of anyones dealer giving them s*** about the kit.