A big block with 3.31 gears will be great. If you go with 3.73 in a stroked big block your first gear is going to be useless for anything but ruining tires.
With that kind of torque you don't need different gears. You want to match up the gear set to typical driving speed and make sure the final gear puts the engine at a comfortable RPM. 3.31 gear with typical OD 5th will put you around 2100-2300 at 75 MPH depending on tire size.
Here's a link to a calculator that you can play with gear selection and tire size.
RICHMOND Street Performance Calculator