Ok. I have a 85 sport coupe, and I just bought 1989 RS ground effects, facia, and rear bumper cover for it. I am painting the car 2001 Dodge Amber Fire Pearlcoat. Anyway, my question is...

When I paint the car, should I leave the flexible parts (facia & rear cover) so I can paint them with the elastomer paint? Or would it be OK to assemble the car, and overspray the elastomer paint onto the front fenders a little? This is not going to be a show car, however, I would like it to look better than the factory paint job did...Any help is greatly appreciated!!!