[63corvette]

I build quite a few powerglides for racers and this is the same question everyone asks.
In my opinion there is not much difference in the transbrakes from various sellers.
The things that make one quicker than the others is the setup to the case/solenoid and the clearances various builders use.
My opinion is just buy a brand name pro tree brake and let the builder know if you need it to react quicker.
Same thing for the button.
Chassis setup is the biggest thing to have the car react quicker.
Just my opinion.
Rick Cates
Canyon, TX