Looks great!
That's one of the few cars that has the Multimatic spool valves shocks in them. They just featured Larry Holt, who had a big part in their invention, in the most recent issue of Road and Track. Not a lot of cars with those in them, and I guess they are what is used in Formula 1, on a lot of cars, really cool concept. For those that don't already know, it's a spin off of Magna International, and builds a lot of parts for both road cars and large supplier in motorsport.
I have read that the Duramax is a bit lackluster in the acceleration department, but mileage is excellent on it. Unless it is modified for that model.