Gears for turbo street car

[twinturbo69]

I have always been told that turbo motors like load on the engine and I am looking for 3:23:1 gears for a Chevy 12 bolt, though having a tough time finding them anywhere. I know that this ratio is available in the much smaller 8.5" 10 bolt rear, but the closest options I can find for the 12 bolt are 3.08:1 and 3.42:1. Appreciate anyone pointing me in the right direction. The car will see the track every so often with the majority of driving on the street. Car makes 800/800 with torque coming on strong down low. Trans is a Turbo 400 and I recently acquired a Moser 12 bolt with 33 spline axles.