LT1 Powerband and Diff Gears

I remember seeing somewhere a chart that showed the Powerband of a stock LT1. I seem to remember the HP and Torque was pretty level and started out at low RPM. Does anyone have this chart or know where its at? I have a 94 Caprice 9C1 and will be transplanting it into a car similar to an Anglia (48 Hillman) Engine will be rebuilt fairly stock, most emissions controls removed. Right now the rear end ratio is 3.09. I picked up a 9" Ford today and it has 2.75's too high. Trying to decide whether or not to get 3.00's or 3.25's. Will be more of a cruiser. Car only weighs 2000lbs vs. the Caprice's 4500lbs.

Thoughts/Ideas?
Marty