I have the ones seen on the home page of the
Ultimate Pedals website on the 928 and love them. They are way less slick than the rubber pads that were replaced and feel nicer. I don't have the nubs on them, just straight aluminum with a cross-hatch grip pattern on them. It's a great look and feel that I would do on the Boxster if it weren't the wife's daily driver. She's not too fond of the look.