tru trac or locker

I put a new 727 trans with a Griner brake in my cuda this winter and now I need to up grade the sure grip. Rearend is a strange dana 60 with 373 gears. I drive it on the street as much as I race it so I don't want to use a spool. Car weighs #3455 lb with me in it and runs 11.0's at 120mph on the motor.60ft's are 1.57-8 sec, tires are 295/55/15 MT DR.I'll be leaving off the brake at 4000 rpm.Anybody have some advice on which one, eaton trutrac or detriot locker would be better.
Thanks