Not sure if this has been posted up yet, but in case you haven't seen this be sure to check it out: http://lexus.popformance.com/
Still in the works, I'm keen to see the end result & a price. Nice to know people are still putting time, money & thought into cool aftermarket replacements like this for our cars whether to our taste or not by the end of it. Make sure to have a read of some of the comments at the bottom of the page too.