Well if i were to tune a murcielago here would be my list!
Carbon Fiber Body - (Which include)
Reventon Front End
Murcielago R-GT Show Car Side Skirts with LP640 Oil Cooler Openings
LP640 and Reventon Rear Diffusers
Jota Style Engine Lid
6.5 Litre V12 with Jota Upgrade Kit
Carbon Fiber Roadster Engine Brace
Titanium 6 into 1 Exhaust Manifolds
Titanium Race Exhaust System
7 Speed E-Gear Transmission
Carbon Fiber/Titanium Driveshaft
Haldex AWD System
Carbon Fiber Interior - (Dash, Trans Tunnel, Etc.)
Reventon TFT LCD Instrument Panel
Brembo GTR 12 Piston Calipers with Carbon/Ceramic Disks - (Front and Rear)
Dymag Carbon Fiber/Magnesium 20" Wheels - (Front and Rear)
I Guess those are a few of the things i would to a murcielago!