well i'm not ASE master certified mechanic but the car runs better with the 750dp than it did with the 600. only other thing I changed was the intake but they are both good single planes so I doubt its that. Like I said i'll get a baseline with the valve body and collectors and then i'll start working the jets and watch the MPH. i'll report back if I never beat his 101mph on the timeslip he gave me.
