Whats is worth 8 3/4 with suregrip, drum to drum, 3.91's

the cars goal is 9's , trans brake 727. forced induction SB
my goal at the moment...is to figure out what my rear end is worth.lol
Where is Marion?
What kind of forced induction?
How is it getting done?

If it is snail powered, belt driven or exhaust driven, it is a softer hit than a NA high rpm trans brake hit or a roots or N02 hitting hard off the line. The reward would live longer.