Aluminum and stainless do not mix well in a marine environment. probably fine in arizona or texas but anywhere there is salt on the roads i would think this is a possibility. I saw some newer 2005-ish vehicles in newyork,illinios and michigan that had their fenderwells rusted out. The roads...
i own a fishing boat in alaska. Always use some form of anti-seize lubricant. My favorite is a product made by FORESPAR CALLED LANOCOAT. had a 30,000 $ peice of equiptment show up last week and it had come from the factory with lanocoat on all the bolts so they must think its good stuff too...