Wet sanding buffing

[Tim7139]

Not for nothing, but if it were me I would give serious consideration toward a machine polish with a mid-agressive compound at most. Assuming it is at least 30-40 year old paint, you have a far better risk/reward with a far lower chance of harming something that will be unlikely to be fixable.
I have seen and been involved in reclaiming old finish that I'd have never guessed could be brought back. A decent orbital can work wonders and all you have to do is a small test panel to see where it can go.