Ideas on running slower E.T without throttle stop

We run as much as 500Lbs of Weight bars.
Square tubing filled with lead and also a weight box
to slow our cars down. Please bolt to the Frame!

Nothing is more effective than adding weight and we
do everything (Oil / Timing / Small Carb / Restriction Plate /etc.)
to slow our stuff down.

My .02 = For Free!
X2, and very affective.