I have been avoiding a response to this post because I hate to question someone's claim w/o having all the facts. However, here are the "facts" as I see them. Assuming this car is street-driven, I will guess at a race weight of 2,600lbs and a 9.63 @ 147 requires about 640rwhp. Less weight, less HP, etc. If the engine made 738rwhp, then it has the capability of running 9.20 @ mid-150s. Is the L6 capable of 738rwhp? I do not see why not, BUT, it is going to need a LOT OF HELP with exotic bolt-ons, i.e., engine management, fuel system, I/C, turbo, etc. I do not believe the claim of using the stock computer and I wil dispute the claim if the engine in question is the one pictured. Here are some of the things I see that make me skeptical: size of the I/C plumbing, size of the fuel rail and fuel lines (I am guessing that is a -6 return with a -8 feed), Single turbo running only 24psi to make 700+rwhp could not fit under a stock exhaust manifold, TimZ is correct in that he sees a cannister and rod for an internal wastegate.