Ok, though it is NOT performance oriented, I just bought JonM's leather padded armrest replacements for my Coupe. And what a difference it makes! I got the plain black, but I had him put 2 pads underneath the leather, and it raised the rest up to a just right height for my arm! And as I got stuck in traffic for over TWO HOURS coming back from the Boxster/Z3/M drive in Malibu (the TT folk never showed up!), it was a lifesaver!