Cool story, but I think you're optimistic
if you think a 5500 lb vehicle with 450 hp would do 0-60 in 4.4 seconds. Take a look at this test of a Bentley Arnage, similar weight, a LOT more torque (616 vs 375)and it "only" does 0-60 in 5.9 seconds. These tests are usually under optimum conditions (ie tires warm, track traction, skilled driver, no mercy).