One thing that hasn't been mentioned, the 8.8 consumes less HP than a 9". So theoretically, you will be faster in a quarter mile using the 8.8 assuming everything else is equal, gears, brake drag, etc.
Dynacorn 67 fastback. Dart 363, Close ratio Magnum 6 speed, 3.70 Eaton Truetrac, SorT suspension. Still in pieces.
'14 SHO with most all the bells and whistles. Stock for now.