72 and up side marker lights on a 70 fender

I have a 72 duster that had the front fenders pie crusted and trimmed in the corners for oversize tire clearance. The pie crusting was done rather roughly and led to some rusting of the turned in tabs to the point where some have broken off. I have some 1970 fenders that are solid and would like to use them. The marker lights would obviously be different than the rear ones on the quarter panels. Has anyone ever used 1972 and up marker lights on the older fenders? I would assume the recess would have to be filled as the later side markers are thinner top to bottom.