I have a 560 SEC 1991

My rear bumper chrome need replacement. The rear bumper have the 3 pieces chrome.

I have seen pictures of a 560 SEC in a US 1991 brochure showing a 560 SEC with the one piece chrome on the rear bumper.

So my question is: can I replace the 3 pieces chrome on the rear bumper of my 560 SEC with a one pieces chrome that I took on the rear bumper of a 420 SEL?

I have read on this forum that I have to remove the whole bumper assembly to be able to remove the chrome and I dont want to do that without knowing if the one piece chrome will fit there.

Thanks

Chris