Removal of the mounting clips was done by drilling out the rivets. It wasn't the best method, and not all the holes are perfect, but it's a step forward in this Vanagon's transformation.
After the first power spray wash cleaning, dirt still remained. It took a little tire grease to loosen up the dirt, then a coat of rubbing compound and wax.
There was more mud on the removed side trim piece than the body, over 15 years worth!
Surprisingly, there was more mud than rust underneath the side trim. The Side trim is attached with vertical screws to these mounting brackets. The mounting brackets are riveted to the body of the Vanagon.