Exactly, Stephen! And Partboy, the GT2 has LSD also. These are the only models in Porsche's lineup (until Carrera GT comes out). It's not as important with the AWD variants (TT, C4, C4S), but the RWD cars really benefit from LSD. Unfortunately, Porsche hasn't been able to combine PSM with LSD, so it's one or the other for the time being...