Hello Bobby,
Not sure what you mean by "anode bolts", but dissimilar
metals are very likely to cause a problem. If your "ground"
is made by Guest, it should have come with what they refer
to as gold-plated bolts. I'm not sure what they are made of,
but I would be inclined to trust them. If your ground plate
is made by Guest, but did not come with bolts, I suggest you
contact them for replacements. If not, try to locate the
manufacturer and get their advice.
You will need to pay attention to your onboard ground system
and possibly provide cathodic protection.
Hope that helps.
Good luck.
Chuck
