[Quicksilver]

The "hot trick" for reliable use of circlips in a high performance environment is to use two of them on each side of the pin. You install them with the openings in opposite directions so they overlap. Each inserted so the rounded side faces each other and the flat side faces out.

Not sure how this is an upgrade for a Porsche...
The reason that anyone uses them is it facilitates fast easy tear down which is important if you are drag racing, running circle track, or ...

Spirolox or the simple round wire retainer may be a pain to tear down but they are much more reliable.