I looked for this information the other day but couldn't find it. Other than that, I could make assumptions about his velocity and other factors.
One interesting observation that I've made is that the engine landed on the sidewalk that was on the passenger side of the vehicle. This strongly suggests that the explosion occurred on the driver's side of the car - thereby imparting the ejected engine + transmission with momentum perpendicular to the direction of travel that would result in it ending up where it did.
I would be happy to perform the calculations if I can just find those masses.