You beat me to it Will
Well said
The only thing I will add to that is that Kev Lees modded ( upright shocked ) pred was courtesy of team Xtreme , not some home done effort to try and make it work! It worked better in stock trim!
So Ron ( SON )

Would you have preferred to be sold this expensive rear end to go slower?
No of course not
No the pred is not dead
It just works best as it is
Turn everything down a little ( as the car is very reactive as you know ) and watch your consistency and times get better
Hope this helps