68 dart grill paint help

the fisheye is from improper prep. if there is no body work required i would just use a 3m gray scotch brite with some dawn dish soap. then dry in sun. then use a wax and grease remover such as diamont pre kleano or a plastic prep cleaner. then prime and paint or just paint with any spray bomb. i would use duplicolor or equivilent. hope this heps.