I am looking into purchasing an ISF and in my research I have seen everything from 4.4 sec - 4.9 sec. 0 - 60 times. What would the most accurate 0-60 time be for a stock ISF? What about the 1/4 mile? Road and Track has it at 4.4 sec. 0 -60, 10.2 sec. 0 -100 and 12.8 @ 113.3 mph in the 1/4 mile.