I have decided to pull the 53 year old gas tank in my 57 3100 and replace it with a new one. The new one is galzanized. My old tank was painted with the interior color.

My question is, should I leave the tank just galvanized or should it be painted?

If it is common to paint them then what preparation needs to me made to a galvanized gas tank?

Any sanding/scuffing to the new tank or just Pre-Paint, primer and top coat or what?

Any special prep or paint?

Thanks.