I have a saab with rubber front and rear bumpers.

I have scuffed them back with p320 and applied flex filler to the areas that need it.

what can I use to prime and topcoat it?

I am in australia and really were only allowed to spray acrylic products in our backyards.

any thoughts/ ideas muchly appreciated

thanks

You need a good adhesion promoter and then epoxy primer.
Treat it just like plastic as far as prep before paint.
The paint itself may need a good flex additive.

most rubber bumpers don't bend that much and if hit by something it usually damages the paint its self not from flexing to much.
Jay D.

thanks guys