We can't in Michigan either. We're not suppose to have ANY % on the front sides but people still do it, myself included.

 

As for your rust spot, it's show worthy if you want it to be. It's a cared for, but driven car. You could try a quick hit with a wire wheel and follow the POR15 system just to at least "hide" it. But ultimately, I am guessing it's rusting from inside out.

But I would not say that spot of rust ruins it from being a show car, but it proves it's NOT a garage queen (and a driven car can NEVER compare to a garage queen).

 

I would remove the grill, it looks great with the tint, I was thinking of going that route. It looks great with the head light covers, I love the look of the ones on my car