How to replace a rubber bumper on right front side 380 sl
 

Hi. I'm new here.
I recently purchased a 1984 380 sl from a friend. It's in pretty good shape but I'm trying to fix a few things.

My latest fix is replacing the front right side bumper rubber.
I started to remove bolts but I don't think I can replace the one rubber without taking the entire bumper off the car. Am I right about this?

Thanks for your feedback