Steve, Yes they do. Couldn't you feel it when ben took you around the track in my car? BTW, my engine is now running 110%, no more bent valve, and I determined that Ben's driving of the car didn;t cause the damage! Brendan Rudack rudack@ucsub.Colorado.EDU 88' 90Q Boulder, Colorado On Thu, 29 Aug 1996 EICHSTEV@aol.com wrote: > > P.S. Do 90 Quattros have Torsen differentials? >