T-bars vs Stored energy

Howard, the snubber could not function because of the sliders you have back there. The springs were too tight...not stiff...tight. When you put power to it, they turned into an S shape and then whipped back.
Put the stock 6 cylinder springs back in it...stock rear shackles. Put a pair of B Body shocks on it. Make sure the pinion is 2-3 degrees down with the car at rest. 1.5 -1.75 inch air gap at the snubber. Clamp the front of the springs....DONE! If that car won't go with that set-up I'll eat the damn thing.
Back in the day I was the driver on a 10 second 4 speed Hemi Challenger Street Race car, and that is the exact set-up we had. Hooked anywhere, anytime. Rear suspension was about the only problem we never had with that car!