diff ratio, much of a difference?

I don't recall exactly what the stall speed is. But I think it's around 3400.
60ft is currently 1.950. I have no idea what the car weighs. Unlike with the street tires (which it can cremate at will) the m&H tires seem to bite quite hard. The car still runs a BW75 diff with 25 spline axles too. We e got one with 3.55's that we could slot under there.