Some posts on the IS-F you may find interesting

The Lexus IS-F is given a limited slip differential for 2010.
Well it's about time! This should be beneficial to those that take this car to the track. I want to drop this in mine.

An employee's experience with the IS-F
This describes some of the encounters one individual had in his IS-F. This is typical when driving a car like this. People really do not know what the car is about and many have no idea how expensive it is.

Britian uses the IS-F for new police fleet
You usually do not see police fleets using foreign cars. Does this say something about the IS-F?

The new IS350C is modified, looking very similar to the IS-F
IS-F fenders on an IS350? I do not think this is necessary. The IS350 may be a sporty car, but is undeserving of the excessive body modifications given to the IS-F. However, this is a tuner company, and they are free to do what the please. The bulging wheel wells seem a bit odd, but it would definitely turn heads on the road.

The 2009 Lexus IS-F for Sema
The color may repulse you, but you cannot deny the mean looks of the body modifications. This model also received the Artisan turbo kit, bumping the car over 500 horses.