I have one of these bumpers lying around And I wanted to put it on my 77 k5. Well it's a much bigger pain than I figured it would be. My friend put one one his and he had to remove the inner metal part including right below the license plate (its all one peice) because the frame is different on the back and gets in the way. So basically his is barely hanging on by the 2 side supports. Is there an easy/better way of doing this?