paint work and thanks

Thanks to all that answered my question in regards to lead/unleaded valves.

Now...I am going to have this car repainted and the new paint will be a
different color. Is it best to strip it down to the bare metal? The paint is
solid that is on the car now, or can I just go over the car with some green
scotch brite as one body shop suggested and hit it with primer?

Thanks in advance,
Charlie Shelden

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