W E I G H T
There're a few lambo murci owners have converted their AWD to just RWD.
Here is quote from Lambo forum "One thing that woudl MASSIVELY increase your HP (about 60 HP), decrease weight (between 250 & 300 lbs.), and imporve clutch life would be to convert it to RWD by removing the front driveshaft, differential etc. It's a fully reversible procedure and only about a 6 hour job. I will be doing my car shortly and cannot wait. Being in Vegas, you have no real need for AWD (e.g., snow, lots of rain, etc.) and would only benefit from the conversion not to mention increase cluth life greatly by reducing the overwhelming "grip" that AWD creates"