I think you're right about the rubber strips appearing later on the vertical bits on the bumper.
I think you're right I think that one may be older than the one i had... I'me pretty sure mine hade like rubber verticle strips on the bumper, the bumper was crome and the ruber was encased in crome also. like around the rubber pads or whatever. It's been so, long... kinda hard to remember.. I know it was red! hehe. and had a bullet hole though the windshield and door when I bought it. :\