Yeah the idea of weak fittings, any stray current or poor inhibitor is present, then they are supposed to become a sacrificial anode.
and save the expensive cast alloy fittings, well its a theory anyway but makes sense to me.
But hey I bought the kit yrs ago and did alot of bits on the GTR.
the goldbrite comes in handy.
I just replaced the fuel rail as removing the old injectors twisted & broke it.
the new oem rail was only zinc plated unlike the original one.
give it a clean and rinse and dip in goldbrite and rinse.
and it will stay looking new for a long time.
I also ordered some of those alloy brazing rods tmh2000 (or something like that).
low temp rods for repairing the slight damage on the lower thermo fitting, save over $200 for something else.