At the risk of sounding like a complete jerk...
That there is a combo I’d not ever run. 3600lbs. + HEMI + 8-3/4 = not good.
Subtract 800 lbs. powered by a small block (equals a lot less torque) equals longer life. Subtract more weight, longer life, foot braking, longer life... etc...
Everything has a failure point.
I’m not here to argue.