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

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.
I think this is a clear case of putting the carriage before the horse doesn't he need to sell the rear end and buy her and and then get a motor and transmission? sounds like he's doing the responsible adult thing and building it from the back forward?