Paint question

For all you guys who know paint/body work: Speak up!


I have a 65 barracuda that is painted silver, I have not done the wet sand and buff yet. In one of my crazy moments, I decided to black out. Problem is that I blacked out inside the headlight buckets the and area behind the grill with rattle can semi flat black (why, I don't know) and the black will show in the area beside the headlight next to the hood (supposed to be body color). I want to remove it and go back silver.
Question: What is the best way to remove it?
1) with thinner?
2) wet sand till silver shows?
3) other advice???

I do no want to have to repaint, HELP!!!

David