Input please

What work was done to the 750 VS? Does it have the secondary metering plate and you've changed the secondary spring? I don't think a DP will do much for you besides add more levels of compleity and tuning, and kill the street manners in terms of gas mileage. As it sits, the car is IMO still a little slow. Similar builds I know of are 12.8-12.60s all day in the heavier later A's. I think the intake (not the Performer RPM, right?) is holding you back a little. If your ignition is curved well and it doesnt miss, IMO MSD would be more of a luxury than a "magically faster" pill, but I think improvements could be found. 104mph says you should be about .3 faster. What is your 60' time? Do the tires spin at all?