He also was running Nitto Drag Radials!
Quiafe or no Quaife the limiting factor of your launch is your tires.
The Quaife really shows is prowress when corners are involved.
If one can spin both tires indefinitely (in a straight line) without a Quaife then adding a quaife accomplishes nothing by itself except for peace of mind from wheel hop & added diff strength for the previously mentioned drag radials and the increased strain they put on the drivetrain.
So I would start with light clutch slips from 3000rpm and adjust from there.
