[Yachtcare]

Lee, Since the '60-'62 and '63-'66 trucks used a different frame the mounting points are what the difference is. You'll find the bolt holes are a couple of inches out of sync from one frame to the other. Also the earlier trucks used forged brackets, and on the later trucks they were stamped, but not certain if that would make any difference. Both front and rear bumpers are pulled off my '61 now, let me know if you need some measurements to compare with yours. My guess would be that you need a bumper from the earlier years to fit your '58 frame. Tony