No need to buy a kit.
Just get a 300c like I did, then put the bentley grill on it.
That's a pic of my car taken on the day of collection from the dealership, it has a 3ltr v6 and runs sooooo smooth, also over 250BHP and can leave most small sized sports cars behind. (Mr2's, Boxsters, even leaves 3 and 5 series in dust)
It was that or an extreme 360 but I couldn't spend that sort of cash on a used car that would have tens of thousands on clock and would have all the hassles of 2nd hand car ownership.
(frequent breakdowns and regular repair costs)