Pitty for FIA restriction, because those 911's have one thing, which no R3, R5, WRC...can offer : Wonderful enigine sound! Once you hear Zeltner or Dobberkau in full action, you forget everything else, including WRC cars.....even old 2.0l kitcars can not match against 6-cylinder flat N/A engine....
Not to mention to owe balls of a bull to drive rear engined 911 on the limit on proper rally stage....