1975 Road Runner

If you look at the detail pictures, it is obvious that the car was taken apart when it was painted. If you google images of these cars you'll find quite a few of these cars with painted bumpers. Could it be a factory option, or is re-chroming just too expensive?

Painted bumpers were a factory option, not just on the B bodies but the E bodies also.
BTW: GM, Ford & AMC were doing painted bumpers too.