The Lexus IS-F is one raging ride and the proposed GS-based version adds a little bit of bling to the experience. Word on the street has this top-of-the-line GS pumping out 465 horsepower from its IS-F derived 5.0-liter V8 and there is background noise of Lexus using aluminum and carbon-fiber parts along the way to shave some poundage off the ride. She's an expensive date with pricing expected to land in upward of the $90,000 range. The GS-F should drop when the model line is updated in 2012.