Lexus Gs F
Lexus GS 450h - Click above for high-res image gallery
Well, the Lexus IS-F is really being seen as an M3 fighter in many camps, so something one size up makes sense as well. Its rumored M5-battling GS-F will need some serious hardware underhood to take on its just-right-sized Bavarian rival. Something like a 500 HP V10 would seem a good start. And that's what it will get apparently.